Change Request
 

NHS Connecting for Health

NHS Data Model and Dictionary Service

Reference: Change Request 1151
Version No:1.0
Subject:Introduction of Help Pages
Effective Date:Immediate
Reason for Change:Patch
Publication Date:11 August 2010

Background:

This patch adds "Help Pages" to the NHS Data Model and Dictionary and updates existing pages to refer to the new help menus.

Summary of changes:

Supporting Information
ABOUT THE NHS DATA MODEL AND DICTIONARY VERSION 3   Changed Description
ABOUT US HELP   New Supporting Information
ALL ITEMS INDEX HELP   New Supporting Information
ATTRIBUTE DEFINITIONS INTRO   Changed Description, Aliases
ATTRIBUTES HELP   New Supporting Information
BACKGROUND   New Supporting Information
CARDINALITY renamed from RELATIONSHIP CARDINALITY   Changed Name, Description
CLASS DEFINITIONS INTRO   Changed Description, Aliases
CLASSES   Changed Description
CLASSES HELP   New Supporting Information
COMMISSIONING DATA SETS HELP   New Supporting Information
DATA COLLECTIONS HELP   New Supporting Information
DATA COLLECTIONS INTRODUCTION   New Supporting Information
DATA ELEMENTS HELP   New Supporting Information
DATA ELEMENTS INTRO   Changed Description, Aliases
DATA MODELLING INTRODUCTION   New Supporting Information
DEMONSTRATIONS   New Supporting Information
DIAGRAMMING CONVENTIONS   Changed Description
DIAGRAMS HELP   New Supporting Information
DIAGRAMS INTRODUCTION   Changed Description, Aliases
DIAGRAMS MENU   Changed Description
HELP INTRODUCTION   New Supporting Information
HELP MENU   New Supporting Information
INDEX   Changed Description
MAIN MENU   Changed Description
MAINTENANCE   New Supporting Information
MUTUALLY EXCLUSIVE RELATIONSHIPS   Changed Description
MUTUALLY EXCLUSIVE RELATIONSHIPS - REDUCED ARC   Changed Description
NAVIGATION   New Supporting Information
NAVIGATION (RETIRED) renamed from NAVIGATION   Changed status to Retired, Name
NHS BUSINESS DEFINITIONS   Changed Description, Aliases
NHS BUSINESS DEFINITIONS HELP   New Supporting Information
NHS DATA MODEL AND DICTIONARY ITEMS (RETIRED) renamed from NHS DATA MODEL AND DICTIONARY ITEMS   Changed status to Retired, Name
PUBLICATION DETAIL (RETIRED)   Changed Description
PUBLICATION VERSION (RETIRED) renamed from PUBLICATION VERSION   Changed status to Retired, Name
RECURSIVE RELATIONSHIPS   Changed Description
RELATED DSCN-ISN HELP   New Supporting Information
RELATIONSHIPS renamed from CLASS RELATIONSHIPS   Changed Name, Description, Aliases
SEARCH HELP   New Supporting Information
SUPERTYPES AND SUBTYPES   Changed Description
SUPPORTING INFORMATION HELP   New Supporting Information
SUPPORTING INFORMATION INTRODUCTION   Changed Description, Aliases
SUPPORTING INFORMATION MENU   Changed Description
WHAT'S NEW: JULY 2010   Changed Description
WHAT'S NEW HELP   New Supporting Information
 
Binary
AUDIO OFF   New Binary
AUDIO ON   New Binary
BACK   New Binary
BACK 40   New Binary
CONTROL BAR   New Binary
DEMONSTRATION   New Binary
DEMONSTRATION 40   New Binary
EXIT   New Binary
FAST FORWARD   New Binary
FORWARD   New Binary
GO BACK   New Binary
HELP INFO   New Binary
HELP INFO 40   New Binary
INFORMATION   New Binary
PAUSE   New Binary
PLAY   New Binary
REWIND   New Binary
 
Packages
HELP PAGES   New Package
 

Date:11 August 2010
Sponsor:Richard Kavanagh, NHS Connecting for Health

Note: New text is shown with a blue background. Deleted text is crossed out. Retired text is shown in grey. Within the Diagrams deleted classes and relationships are red, changed items are blue and new items are green.

Click here for a printer friendly view of this page.


ABOUT THE NHS DATA MODEL AND DICTIONARY VERSION 3

Change to Supporting Information: Changed Description

Following the issue of DSCN 07/2004 'Data Standards: Meta Model', the NHS Data Model and Dictionary was changed to reflect and be based upon a more generic logical data model which better supports the strategic way forward. This NHS Data Model and Dictionary was published as the NHS Data Model and Dictionary Version 3.

There was extensive quality assurance of Version 3 including involvement of the Data Definition Group. All Version 3 contents were cross mapped and checked to ensure consistency with the Version 2 contents. Version 3 superseded Version 2 on 1st May 2005.

Version 3 supports all the messages, data sets and central returns supported by Version 2 but the underlying structure was genericised. No changes were made to NHS Business Definitions.

Version 3 introduced a new Generic Model which is 'PERSON based' rather than 'ORGANISATION based'. The model has been developed around generic 'CARE ACTIVITY' for a PATIENT at 'SERVICE POINT' facility or LOCATION with each event transaction being recorded. This has involved grouping many of the old classes into generic classes like ACTIVITY GROUP. However, none of the detail or approved definitions or value sets in Version 2 have been lost although some of the old class definitions will now be found in the new 'NHS Business Definitions'.

The NHS Data Dictionary Version 2 has been frozen and made available for archive information purposes only and has been watermarked accordingly. All changes to NHS data standards and the supporting Data Set Change Notices are now consistent only with Version 3.

Summary of main changes and enhancements incorporated within Version 3

  • Introduction of the capability of holding Retired Items
  • Introduction of NHS Business Definitions, which allow specific business areas to be defined in a more flexible manner
  • New ‘All Items Index’ which lists all the contents held within the NHS Data Model and Dictionary
  • Reduction in the number of data model diagrams making them more comprehensible
  • Introduction of Domains, which are conceptual logical modelling objects which identify the logical format, length and value set attributable to one or more attribute(s)
  • 'Where Used' list expanded to include a description of usage column
  • Creation of a separate Meta Model area within the publication

The introduction of Version 3 had no impact on current data standards or system suppliers.

About the Generic Model

The Generic Model supports all the messages, data sets and central returns which the model supported but the underlying structure has been genericised. This involved grouping many of the old classes into generic classes like ACTIVITY GROUP. However, none of the detail was lost and most of the old class definitions can be found under 'NHS Business Definitions'. The number of diagrams has been greatly reduced and they now describe coherent areas of the model which is a far more useful approach for data modellers.

This has led to the creation of a new Generic Model which is 'PERSON based' rather than 'ORGANISATION based'. The model has been developed around generic 'CARE ACTIVITY' for a PATIENT at 'SERVICE POINT point' facility or location with each event transaction being recorded.

The model is aimed at enabling all 'CARE ACTIVITIES' related to the same condition for the same PATIENT  to be recorded and linked across ORGANISATIONS. The different states of the same 'CARE ACTIVITY' are recorded as event transactions e.g. requested, intended, scheduled, provided, cancelled, etc. These different state events also drive the scheduling and capacity planning of resources (people, equipment, facilities, etc.) to deliver the care.

Although this may seem complicated, it is necessary both to form a coherent logical model and to relate physical information such as that which flows on the Data Sets to the logical model. Every physical item should be represented logically in the NHS Data Model and Dictionary. However, the scope of the logical model is greater than the physical information it holds and therefore not all logical information has a physical existence.

The Classes, Attributes and Relationships are logical model components.

  • A Class is something that you want to collect information about. Classes have four tabs:
    • Description: a description of the Class
    • Attributes: the Attributes which are associated with that Class
    • Relationships: the relationships associated with other Classes
    • Where Used: every item where the Class is referenced.
  • An Attribute is the information that is going to be collected. Attributes have three tabs:
    • Description: a description of the Attribute
    • Where Used: every item where the Attribute is referenced
    • Data Elements: the Data Elements based on the Attribute

Data Elements are physical model components. They represent information on the Data Sets. Identifying how this information maps to the logical model is essential, if the information stored on the Attributes, Classes and Relationships is to be utilised with respect to the physical item.

  • A Data Element is an instantiation of the logical Data Model. Data Elements have three tabs:
    • Description: a description of the Data Element
    • Where Used: every item where the Data Element is referenced
    • Attribute: the Attribute the Data Element is derived from

Each Attribute name, Class name or Data Element name is in uppercase, other items, such as NHS Business Definitions etc will appear in Title Case. Where the name in text also appears in a colour other than black, this indicates that it is a clickable link and if clicked on will display the description for that item.

Contact us for more information: datastandards@nhs.net.

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ABOUT US HELP

Change to Supporting Information: New Supporting Information


The NHS Data Model and Dictionary is maintained by the NHS Data Model and Dictionary Service.

NHS Data Model and Dictionary Service Products

The NHS Data Model and Dictionary Service produce other supporting products and services which complement the content of the NHS Data Model and Dictionary.

These can be found on the NHS Data Model and Dictionary Service website and can be accessed by clicking on the link to the 'NHS Data Model and Dictionary Service' on the front page of the dictionary.

The NHS Data Model and Dictionary Service website contains information, such as:


What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the NHS Data Model and Dictionary Main Menu.

  •   Help Pages

If you need help using the NHS Data Model and Dictionary, access the Help pages.

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ALL ITEMS INDEX HELP

Change to Supporting Information: New Supporting Information


The "All Items Index" lists all the items in the NHS Data Model and Dictionary in alphabetical order.

All items are coloured coded:

There is a link “To top” on each page which takes you back to the top of the "All Items Index" page. 


What would you like to do next?

  •  NHS Data Model and Dictionary Content

View All Items Index (A-Z) in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on the All Items Index, see the All Items Index Demonstration.

Please note that you will need flash player to view these demonstrations.  If you do not have flash player, contact your organisation's technical support for further information.

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ATTRIBUTE DEFINITIONS INTRO

Change to Supporting Information: Changed Description, Aliases


Click on a letter in the Attribute menu to display the list of Attribute names for that letter. To display the definition for a specific Attribute, click on the Attribute name.

Each Attribute name is in uppercase. Where the name appears in text in Purple, it indicates that it is a hyperlink and if clicked on will display the definition for that Attribute.

The following information is available on an Attribute:

  • "Description" tab: a description of the Attribute

  • "Where Used" tab: every item where the Attribute is used

  • "Data Elements" tab: the Data Elements based on the Attribute

  • Agreed National Codes or classifications.

For further information on Version 3 of the NHS Data Model and Dictionary, see About Version 3.

To navigate to an Attribute:

  • Click on Attributes on the left hand menu;
    • Because there are a large number of Attributes, the alphabetical list has been broken down into groups to make it easier to find what you are looking for.
  • Click on a group of letters in the Attribute menu to display the list of Attributes for that group;
  • Click on the Attribute name to display the definition for a specific Attribute.

 For more information on Attributes, see Attributes Help.

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ATTRIBUTE DEFINITIONS INTRO

Change to Supporting Information: Changed Description, Aliases


ATTRIBUTES HELP

Change to Supporting Information: New Supporting Information


An Attribute is the detailed information that describes a Class, for example, NHS NUMBER is an Attribute of the Class PATIENT.

Each Attribute:

  • Has a Purple Bar to signify that it is an Attribute;
  • Name is in UPPERCASE and where the name appears in text in PURPLE, it indicates that it is a hyperlink and if clicked on will display the definition for that Attribute.

The following information is available on an Attribute:

  • "Description" tab: a definition of the Attribute which provides hyperlinks to other related definitions. It may contain National Codes.

  • "Where Used" tab: every item where the Attribute is used within the NHS Data Model and Dictionary.

  • "Data Elements" tab: the Data Elements based on the Attribute.

What would you like to do next?

  •  NHS Data Model and Dictionary Content

View Attributes in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on Attributes, see the Attributes Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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BACKGROUND

Change to Supporting Information: New Supporting Information



The NHS Data Model and Dictionary provides a reference point for assured information standards within the NHS in England and is maintained by the NHS Data Model and Dictionary Service.

It contains Data Collections and associated definitions which have been assured by the Information Standards Board for Health and Social Care. The information will be of interest to professionals and ORGANISATIONS that work within Health and Social Care, along with suppliers of electronic systems and services.

It does not contain all national data collections. These can be found within the Information Catalogue maintained by The NHS Information Centre for health and social care.


What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the NHS Data Model and Dictionary Main Menu.

  •   Help Pages

If you need help using the NHS Data Model and Dictionary, access the Help pages.

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CARDINALITY  renamed from RELATIONSHIP CARDINALITY

Change to Supporting Information: Changed Name, Description


Relationship Cardinality is indicated by the presence of numbers on either end of the relationship line connecting the Classes.

0..* indicates that the cardinality is may be related to one or more instance of the class

Cardinality describes how many of one Class is allowed against an instance of another Class.

In the NHS Data Model and Dictionary Cardinality is represented:

  • In Diagrams by numbers on either end of the relationship line connecting Classes;
  • On Classes by words describing the Relationship and Cardinality.

Cardinality represents the minimum and maximum number of instances of one Class against another.

In the NHS Data Model and Dictionary:

  • 0..* means that a Class “may be related to one or more Class”
  • 0..1 means that a Class “may be related to one and only one Class”
  • 1..* means that a Class “must be related to one or more Class”
  • 1 means that a Class “must be related to one and only one Class”

The minimum number is usually a 0 or a 1:

  • 0 indicates a Class may be present and
  • 1 indicates at least one instance of the Class must be present.

An example of Cardinality in diagrams is given below:


0..1 indicates that the cardinality is may be related to one and only one instance of the class
1..* indicates that the cardinality is must be related to one or more instance of the class
1 indicates that the cardinality is must be related to one and only one instance of the class

An example of Relationship Cardinality in diagrams is given below:

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CLASS DEFINITIONS INTRO

Change to Supporting Information: Changed Description, Aliases


Click on a letter in the Class menu to display the list of Classes for that letter. To display the definition for a specific Class, click on the Class name.

Each Class name is in uppercase.  Where the name appears in text in Red, it indicates that it is a hyperlink and if clicked on will display the definition for that Class.

The following information is available on a Class:

  • "Description" tab: a description of the Class

  • "Attributes" tab: the Attributes which are associated with that Class
    • The unique identifier of a Class may include one or more Attributes. These are known as KEY attributes and are therefore shown with 'K' before the Attribute name.
    • Attributes are sequenced with the key Attributes first.

  • "Relationships" tab: the relationships between Classes
    • Description:
      • The nature of the relationship is indicated by: 'must be' if the relationship is mandatory and 'may be' if the relationship is optional.
      • Where relationships from one Class to others are mutually exclusive, then 'or' appears at the beginning of the description between the second and subsequent exclusive relationships. Mutually exclusive relationships are shown on diagrams by a short straight line cutting across the relationship.
    • Keys:
      • The unique identifier of a Class may include one or more relationships to other Classes. These are indicated by 'K' before the relationship description.
      • Relationships are sequenced with the key relationships first.

  • "Where Used" tab: every item where the Class is used.

For further information on Version 3 of the NHS Data Model and Dictionary, see About Version 3.


To navigate to a Class:

  • Click on Classes on the left hand menu;
  • Click on a letter in the Class menu to display the list of Classes for that letter;
  • Click on the Class name to display the definition for a specific Class.

 For more information on Classes, see Classes Help.

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CLASS DEFINITIONS INTRO

Change to Supporting Information: Changed Description, Aliases


CLASSES

Change to Supporting Information: Changed Description


Classes are shown in diagrams as in the example below:

A Class is something that you want to describe and the Attributes define the detail for the Class.

For example, the APPOINTMENT Class in the NHS Data Model describes an arrangement for a PATIENT to be seen by a CARE PROFESSIONAL.

The detail for the Class is defined by its Attributes, for example APPOINTMENT DATEATTENDED OR DID NOT ATTEND etc.

For further information on Attributes, see Attributes.

Classes are shown in diagrams as in the example below:


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CLASSES HELP

Change to Supporting Information: New Supporting Information


Classes, Attributes and Relationships are components which together define the NHS Data Model. For further information, see Data Modelling.

A Class is something that you want to describe and the Attributes define the detail for the Class.

For example, the APPOINTMENT Class in the NHS Data Model describes an arrangement for a PATIENT to be seen by a CARE PROFESSIONAL.
The detail for the Class is defined by its Attributes, for example APPOINTMENT DATEATTENDED OR DID NOT ATTEND etc.
For further information on Attributes, see Attributes.

Each Class:

  • Has a Red Bar to signify that it is a Class;
  • Name is in UPPERCASE and where the name appears in text in RED, it indicates that it is a hyperlink and if clicked on will display the definition for that Class.

The following information is available on a Class:

  • "Description" tab: a definition of the Class which provides hyperlinks to other related definitions.

  • "Attributes" tab: the Attributes which are associated with that Class.
    • A Key or a set of keys uniquely identifies an instance of a Class.
    • The K before the Attribute name indicates that this is a key attribute of the Class.
    • Attributes are sequenced with the key Attributes first.

  • "Relationships" tab: the Relationship between Classes. For further information, see Relationships
    • Description:
      • The nature of the Relationship is indicated by:
        • 'must be' if the Relationship is mandatory and
        • 'may be' if the Relationship is optional.
        • For further information, see Cardinality.
      • Where Relationships from one Class to others are mutually exclusive, then 'or' appears at the beginning of the description between the second and subsequent exclusive Relationships. For further information, see Mutually Exclusive Relationships.
    • Keys:
      • A Key Relationship uniquely identifies an instance of a Class.
      • Key Relationships are indicated by K before the relationship description.
      • Relationships are sequenced with the key Relationships first.

  • "Where Used" tab: every item where the Class is used within the NHS Data Model and Dictionary. 

What would you like to do next?

  •  NHS Data Model and Dictionary Content

View Classes in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on Classes, see the Classes Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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COMMISSIONING DATA SETS HELP

Change to Supporting Information: New Supporting Information


This page contains information on the following subjects:

  • Commissioning Data Sets
  • Commissioning Data Set Supporting Information
  • Schema Documentation
  • Supporting Data Sets

Commissioning Data Sets

The Commissioning Data Set is the basic structure used for the submission of commissioning data to the Secondary Uses Service. Every secondary care provider in England has to send a set of standard Commissioning Data Sets to the Secondary Uses Service which contains details of all the care they have provided.

Each Commissioning Data Set name is in Title Case and where the name of a Data Set is Aqua Blue, it indicates that it is a hyperlink and if clicked on will display the Data Set.

To access a Commissioning Data Set,:

The NHS Data Model and Dictionary Service have redesigned the Commissioning Data Set pages within the NHS Data Model and Dictionary, to provide all the required rules and information in one view. The purpose of the change of layout of the Commissioning Data Set tables within the NHS Data Model and Dictionary is to improve user understanding. There will be dual running of the old and new layouts for a trial period at which point only the new layout will be available.  Further guidance on the new layout can be found below under "What would you like to do next? - Guidance".

There are three frames to each Commissioning Data Set:

  • "Left Hand Frame": shows the Commissioning Data Set menu.

  • "Middle Frame":
    • This displays the Data Set.
    • The Data Set is split into Data Groups which contain Data Elements grouped into logical sections. For example the ‘CDS Data Group: Patient Identity’ contains Data Elements relating to a Patient’s identity such as NHS NUMBER.
    • If you click on any item in the Data Set, the definition will be displayed in the "Right Hand Frame".

  • "Right Hand Frame":
    • For the old style Commissioning Data Sets, this initially shows the Commissioning Data Sets Introduction page and provides links to other more detailed information.  This initial page is displayed with each Commissioning Data Set.
    • For the new style Commissioning Data Sets, initially shows an "Overview" page, which provides information relating to the type of Commissioning Data Set.
    • It displays Data Element definitions viewed from the "Middle Frame".
  • Where information is displayed in frames, the width of the frames can be adjusted by clicking on the “vertical” scroll bar and dragging it left or right as appropriate.

Commissioning Data Set Supporting Information

Further information relating to Commissioning Data Sets can be accessed from the Commissioning Data Sets menu in the "Left Hand Frame".

This section provides help and guidance for transmitting the Commissioning Data Sets to the Secondary Uses Service, for example, the Commissioning Data Set Message Schema Versions page.  The Commissioning Data Set XML Message Schema, documentation and Release notes can be downloaded from this page.

Note: XML based messaging has been mandated as the standard to be used for transmitting the Commissioning Data Sets.  The XML Schema defines the nationally agreed data specification.

Schema Documentation

The Commissioning Data Set XML Message Schema is a technical document that is designed for use by anyone setting up and maintaining systems to flow Commissioning Data Sets.  It offers a visual representation of the actual XML Schema against which the data is validated.

This provides:

  • The Format and Length of the Data Element
  • Optionality:  this indicates whether Data Elements are Optional or Mandatory
  • Conditionality:  this indicates that there are conditions where the Data Element must be populated
  • National codes (not descriptions) which are shown as enumerations
  • A structural view of each Commissioning Data Set

Supporting Data Sets

Supporting Data Sets are subsets of Commissioning Data Sets and can be accessed from the Front Page as with any other Data Sets, for example, the Critical Care Minimum Data Set.  All relevant Commissioning Data Sets can be accessed by clicking on the hyperlinks form this Data Set.


What would you like to do next?

  •  NHS Data Model and Dictionary Content

View the Commissioning Data Set Overview in the NHS Data Model and Dictionary.

  •   Guidance

For guidance on the new Commissioning Data Set Layout, see the Commissioning Data Set Redesign Guidance Notes.

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DATA COLLECTIONS HELP

Change to Supporting Information: New Supporting Information


A Data Set is a group of Data Elements that are required to support business analysis, for example, data associated with an Accident And Emergency Attendance is transmitted in the CDS V6 Type 010 - Accident and Emergency Commissioning Data Set.

The primary purpose of national data sets is to enable the same health information to be generated across the country independent of the ORGANISATION or system that captures it.

Note: The NHS Data Model and Dictionary does not contain all national data collections. These can be found within the Information Catalogue maintained by The NHS Information Centre for health and social care.

Data Sets are grouped together on the front page of the NHS Data Model and Dictionary under Data Collections. A description of each type of data set can be found by hovering over the item name.

The Commissioning Data Sets section also contains supplementary information, see the Commissioning Data Sets Help page for further information.

Each Data Collection name is in Title Case.

Where the name of a:

  • Data Set in text is Aqua Blue, it indicates that it is a hyperlink and if clicked on will display the Data Set and
  • Central Return Form is Pink, it indicates that it is a hyperlink and if clicked on will display the Central Return Form.

There are three frames to each Data Set:

  • "Left Hand Frame": shows the appropriate Data Set menu.

  • "Middle Frame":
    • For Data Sets:
      • This displays the Data Set and may also contain information relating to the data set.
      • The Data Set is split into Data Groups which contain Data Elements grouped into logical sections.
      • If you click on any item in the Data Set, the definition will be displayed in the "Right Hand Frame".
    • For Central Return Forms, this provides a picture of the form. There is a tab for each page of the form.

  • "Right Hand Frame":
    • Initially shows an "Introduction" or "Overview" page, which provides information relating to the type of Data Set.
    • It displays Data Element definitions viewed from the "Middle Frame".

  • Where information is displayed in frames, the width of the frames can be adjusted by clicking on the “vertical” scroll bar and dragging it left or right as appropriate.

What would you like to do next?

  •  NHS Data Model and Dictionary Content

View Data Collections in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on Data Collections, see the Data Collections Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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DATA COLLECTIONS INTRODUCTION

Change to Supporting Information: New Supporting Information


To navigate to a Data Set:

  • Click on the Data Set type on the left hand menu to display the relevant Data Set menu and Introduction page;
  • Click on the Data Set name to display the Data Set and Overview page.

 For more information on Data Sets, see the Data Collections Help.

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DATA ELEMENTS HELP

Change to Supporting Information: New Supporting Information


A Data Element is the definition of the information which is usually transmitted in a Data Set.

In addition, Data Elements can contain text providing guidance, support, values or other information concerning the Data Element and its usage.

Each Data Element:

  • Has a Green Bar to signify that it is a Data Element;
  • Name is in UPPERCASE and where the name appears in text in GREEN, it indicates that it is a hyperlink and if clicked on will display the definition for that Data Element.

The following information is available on an Data Element:

  • "Description" tab: a definition of the Data Element which provides hyperlinks to other related definitions.

    • Format/Length:
      • An entry in this field defines the format and length of the Data Element.
      • The character set used for Data Elements is the UTF-8 standard (Unicode Transformation Format-8).
      • The number indicates the field length of the Data Element.

    • HES Item:
      • This is the Hospital Episode Statistics (HES) name for the Data Element, for example, Data Element BIRTH DATE has a Hospital Episode Statistics item name of "DOB".
      • Hospital Episode Statistics is a data warehouse containing details of all admitted and outpatient activity reported in the Commissioning Data Sets, therefore, not all Data Elements have a HES Item name.
      • A list of HES names can be found in the Hospital Episode Statistics Cross Reference Tables.

    • National Codes:
      • An entry in this field indicates that National Codes or classifications exist for the Data Element (as an Attribute) and describes how to view them.
      • If there are no agreed National Codes or classifications for the Data Element, the field is blank.

    •  Default Codes:
      • An entry in this field indicates that in addition to the agreed National Codes for the Data Element, there are default codes applicable to that Data Element only.
      • If there are no Default Codes for the Data Element, the field is blank.

    • Notes:
      • The Notes section provides guidance or other information concerning the Data Element and its usage.
      • The table at the foot of the page shows if there is an alias for this Data Element, e.g. schema name etc.

  • "Where Used" tab: every item where the Data Element is used within the NHS Data Model and Dictionary.

  • "Attribute" tab: the Attribute the Data Element is based on.
    • Data Elements are linked to Attributes so they can share the common Attribute definition. For example, NHS NUMBER, NHS NUMBER (BABY) and NHS NUMBER (MOTHER) are based on the one Attribute of NHS NUMBER.
    • Not all Data Elements are based on an Attribute. Some Data Elements are derived from other items, for example, AGE ON ADMISSION is a derived item and is not linked to an Attribute.

What would you like to do next?

  •  NHS Data Model and Dictionary Content

View Data Elements in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on Data Elements, see the Data Elements Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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DATA ELEMENTS INTRO

Change to Supporting Information: Changed Description, Aliases


Data Elements are used to identify or indicate the content of data sets. In addition, Data Elements can contain text providing guidance, support, values or other information concerning the Data Element and its usage.

The Data Elements are listed in alphabetical order. Click on a letter in the Data Element menu to display the list of Data Element names for that letter. To display the definition for a specific Data Element, click on the Data Element name.

Each Data Element name is in uppercase. Where the name appears in text in Green, it indicates that it is a hyperlink and if clicked on will display the definition for that Data Element.

The following information is available on a Data Element:

  • "Description" tab: a description of the a Data Element

  • "Where Used" tab: every item where the Data Element is used

  • "Attribute" tab: the Attribute the Data Element is based on

  • Format/ Length:
    • An entry in this field defines the format and length of the Data Element.
    • The character set used for Data Elements is the UTF-8 standard (Unicode Transformation Format-8).
    • The number indicates the field length of the Data Element.

  • HES Item:

  • National Codes:
    • An entry in this field indicates that the National Codes or classifications exist for the Data Element (as an Attribute) and describes how to view them e.g. 'Click on the attribute tab to display the attribute that contains the National Codes' or 'See the relevant Attribute'.
    • If there are no agreed National Codes or classifications for the Data Element, the field is blank.
    • A National Code has nationally agreed values for each code which must be used in conjunction with the Data Element whereas for a classification, the classifications will be nationally agreed but will have no nationally agreed values assigned to them. Usually for classifications, the values to be used in conjunction with the Data Element will be contained within Notes: content e.g. see AGE GROUP INTENDED.
  • Default Codes:
    • An entry in this field indicates that in addition to the nationally agreed National Codes or classifications, default codes may be used. These default codes normally only appear within Data Elements.

  • Notes:
    • Provides guidance, support, values or other information concerning the Data Element and its usage. Any Attribute name, Class name or Data Element name which appears in the Notes text is in uppercase, any NHS Business Definition appears in Title Case. Where the name also appears in text in a colour other than black, this indicates that it is a clickable link and if clicked on will display the definition for that item.

For further information on Version 3 of the NHS Data Model and Dictionary, see About Version 3.

To navigate to a Data Element:

  • Click on Data Elements on the left hand menu;
    • Because there are a large number of Data Elements, the alphabetical list has been broken down into groups to make it easier to find what you are looking for
  • Click on a group of letters in the Data Element menu to display the list of Data Elements for that group;
  • Click on the Data Element name to display the definition for a specific Data Element.

 For more information on Data Elements, Data Elements Help.

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DATA ELEMENTS INTRO

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DATA MODELLING INTRODUCTION

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Classes, Attributes and Relationships are components which together define the NHS Data Model and are a suggested reference point for System Suppliers when developing systems.

Note: Data Elements and Data Sets, which define the national information requirements, reference the NHS Data Model components to form part of the wider NHS Data Model and Dictionary.
  • Demonstrations

These components are explained in a short PowerPoint presentation. To view this presentation, see the NHS Data Model and Dictionary Components.

NHS Data Model

The NHS Data Model provides:

  • Structure to the data
    • This enables data to be seen in context to other data items. This is achieved by grouping data into Classes and having relationships between the Classes.

  • Detailed data definitions
    • Agreed definitions provide a common basis for communication.

  • High level graphical view of data
    • The NHS Data Model and Dictionary has a small set of Diagrams which represent parts of the NHS Data Model. These diagrams show the Classes, Relationships and Cardinality.
    • For example, the Patient Pathway diagram shows the Patient Pathways covered by the 18 week referral to treatment target.

What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the NHS Data Model and Dictionary Main Menu.

  •   Help Pages

If you need help using the NHS Data Model and Dictionary, access the Help pages.

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DEMONSTRATIONS

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  Demonstrations

A number of short demonstrations are available which will take you through each component, step by step, in an easy to understand screen capture including a voice over and readable captions.
You can access the demonstrations from the help pages, they are indicated by this icon.

If you are not familiar with the NHS Data Model and Dictionary, it is recommended that you proceed through the demonstrations in the following order.

The subjects covered are:

At the end of each demonstration, you can choose where you want to go next, you can either:
  • test your knowledge on the section you have just completed
  • navigate through all the demonstrations in the order above (recommended for new users)
  • return to the Help menu
  • return to the front page of the NHS Data Model and Dictionary.

Once you have completed the demonstrations, there are two quizzes to check your understanding of the help pages and the navigation options:

The content of these demonstrations is for training purposes only and therefore may not match the current content of the NHS Data Model and Dictionary.
Please refer to the Main Menu for the latest version of the NHS Data Model and Dictionary.


There are also PowerPoint presentations for:

How to use the Demonstrations

  • Playback Control bar

The Playback Control bar appears at the bottom of every page.  Titles for the controls will appear when you hover over them.
The controls are explained below:

  • Rewind:  This control allows you to rewind back to the beginning of the demonstration
  •    Play / Pause:  This control allows you to play or pause a demonstration

  • Back:  This control allows you to 'rewind' a demonstration at specific intervals

  • Forward:  This control allows you to go forward in a demonstration at specific intervals

  • Fast Forward:  This control allows you to fast forward through the demonstration

  •     Audio On / Off:  This control allows you to turn the audio on or off

  • Exit:  This control exits the demonstration

  • Information:  This control provides information on Adobe Captivate

Please note:

  • will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.
  • if you have problems viewing the demonstrations (i.e. screen size), contact your organisation's technical support for advice.

What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the NHS Data Model and Dictionary Main Menu.

  •   Help Pages

If you need help using the NHS Data Model and Dictionary, access the Help pages.

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DIAGRAMMING CONVENTIONS

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DIAGRAMS HELP

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The NHS Data Model and Dictionary has a number of diagrams which represent specific parts of the NHS Data Model.

The diagrams show:

There are three frames to each Diagram:

  • "Left Hand Frame": shows the Diagrams Menu.

  • "Middle Frame":
    • Displays the diagram, which contains Classes and selected Attributes associated to that Class.
    • If you click on any Class or Attribute, the description will be displayed in the "Right Hand Frame".

  • "Right Hand Frame":
    • Initially shows the Diagram overview page, which provides information relating to the selected diagram.
    • Displays definitions viewed from the "Middle Frame."

  • Where information is displayed in frames, the width of the frames can be adjusted by clicking on the “vertical” scroll bar and dragging it left or right as appropriate.

What would you like to do next?

  •  NHS Data Model and Dictionary Content

View Diagrams in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on Diagrams, see the Diagrams Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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DIAGRAMS INTRODUCTION

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The NHS Data Model and Dictionary has a small set of diagrams which represent parts of the NHS Data Model.

The diagrams show:

  • relationships between classes
  • relationship cardinality
  • key attributes and
  • other attributes that are relevant to the model view. Note that not all attributes for a class will be visible.

The list of these diagrams is located on the left.

To navigate to a Diagram:

  • Click on Diagrams on the left hand menu;
  • Click on the Diagram name to display the Diagram.

 For more information on Diagrams, see Diagrams Help.

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DIAGRAMS INTRODUCTION

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DIAGRAMS MENU

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HELP INTRODUCTION

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Welcome to the NHS Data Model and Dictionary Help Pages

  • This page provides a list of all NHS Data Model and Dictionary help pages.
  • All the pages listed below can also be accessed from the menu in the left hand frame.
  • The help pages have three icons which are a visual prompt to indicate that there is a hyperlink.
Please note that the icons are not hyperlinks.

ITEM NAME

DESCRIPTION

NAVIGATION

This icon indicates that there is a hyperlink to a page within the NHS Data Model and Dictionary.

HELP

This icon indicates that there is a hyperlink to a help page. All help pages have a blue background.

DEMONSTRATIONS

This icon indicates that there is a hyperlink to a demonstration.
About UsThe NHS Data Model and Dictionary is maintained by the NHS Data Model and Dictionary ServiceNoneAbout Us HelpNone
All Item Index (A-Z)The NHS Data Model and Dictionary has an All Items Index which lists all the items in the dictionary in alphabetical orderAll Items Index (A-Z)All Items Index HelpAll Items Index Demonstration
AttributesAn Attribute is the detailed information that describes a ClassAttributesAttributes HelpAttributes Demonstration
BackgroundThe NHS Data Model and Dictionary provides a reference point for assured information standards within the NHS in EnglandNoneBackgroundNone
ClassesA Class is something that you want to describe and the Attributes define the detail for the ClassClassesClasses HelpClasses Demonstration
Commissioning Data SetsThe Commissioning Data Set is the basic structure used for the submission of commissioning data to the Secondary Uses ServiceCommissioning Data SetsCommissioning Data Sets HelpCommissioning Data Set Redesign Guidance Notes **
Data CollectionsA Data Collection or Data Set is a group of Data Elements that are required to support business analysisData CollectionsData Collections HelpData Collections Demonstration
Data ElementsA Data Element is the definition of the information which usually flows in a Data Set. In addition, they can contain text providing guidance, support, values or other informationData ElementsData Elements HelpData Elements Demonstration
Data Modelling IntroductionThe NHS Data Model and Dictionary is made up of a number of componentsNoneData Modelling IntroductionNHS Data Model and Dictionary Components
DemonstrationsA number of short demonstrations are available which will take you through the NHS Data Model and Dictionary componentsNoneDemonstrationsNone
DiagramsThe NHS Data Model and Dictionary has a small set of diagrams which represent parts of the NHS Data ModelDiagramsDiagrams HelpDiagrams Demonstration
Help IntroductionThe NHS Data Model and Dictionary Help Introduction Page will help direct you to the information you requireNoneHelpNone
MaintenanceThe NHS Data Model and Dictionary Service are approached when changes to information standards are requiredNoneMaintenanceNHS Data Model and Dictionary Maintenance Process
NavigationThere are many ways to navigate the NHS Data Model and Dictionary.NoneNavigationNone
NHS Business DefinitionsEach NHS Business Definition consists of freestanding text which describes an aspect of NHS activityNHS Business DefinitionsNHS Business Definitions HelpNHS Business Definitions Demonstration
Related ISN/DSCNThe Related DSCN/ISN link shows which Information Standards Notice or Data Set Change Notice made changes to an itemMain MenuRelated DSCN-ISN HelpRelated DSCN/ISN Demonstration
SearchThe NHS Data Model and Dictionary has a Quick Search Facility on every page and an Advanced Search Facility on the front pageMain Menu and Advanced SearchSearch HelpSearch Demonstration
Supporting InformationSupporting Information provides information to help users understand and use the NHS Data Model and DictionarySupporting InformationSupporting Information HelpSupporting Information Demonstration
What's NewThe What's New page shows the information standards that have been incorporated into each release of the NHS Data Model and DictionaryWhat's NewWhat's New HelpWhat's New Demonstration

** This is not a demonstration, guidance is available on the new Commissioning Data Set Layout.

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HELP MENU

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INDEX

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NHS DATA MODEL AND DICTIONARY

Version 3

What's New: July 2010

The NHS Data Model and Dictionary provides a reference point for assured information standards to support health care activities within the NHS in England.

It has been developed for everyone who is actively involved in the collection of data and the management of information in the NHS.

The NHS Data Model and Dictionary is maintained and published by the NHS Data Model and Dictionary Service and all changes are assured by the Information Standards Board for Health and Social Care and published as Information Standards Notices (ISNs).
Classes are shown in Red Text, Attributes are shown in Purple, Data Elements are shown in Green, Data Sets are shown in Aqua Blue, Central Return Forms are shown in Pink and other pages are shown in Blue.
Welcome to the NHS Data Model and Dictionary for England

If you would like to know more about us or need help using the NHS Data Model and Dictionary, see the Help pages

The NHS Data Model and Dictionary is maintained and published by the NHS Data Model and Dictionary Service and all changes are assured by the Information Standards Board for Health and Social Care and published as Information Standards Notices (ISNs).

The NHS Data Model and Dictionary provides a reference point for assured information standards to support health care activities within the NHS in England. It has been developed for everyone who is actively involved in the collection of data and the management of information in the NHS.

 
 

Related Links
Frequently Asked Questions
Useful Links
Department of Health website
The NHS Information Centre for health and social care website
Information Catalogue
Secondary Uses Service website

 

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MAIN MENU

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MAINTENANCE

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The NHS Data Model and Dictionary maintenance process follows the steps listed below:

  • Need Identified
  • Identify Sponsor and Developer
  • Analysis and Data Modelling
  • Draft Change Request
  • Consultation Process
  • Information Standards Board for Health and Social Care (ISB)

This process is described below.

  • Demonstrations

A PowerPoint presentation is also available which will take you through this process. To view this presentation, see the NHS Data Model and Dictionary Maintenance Process.

  • Need Identified

The NHS Data Model and Dictionary Service are approached when changes to information standards are required. This could be the introduction of a new information standard or an amendment, deletion or retirement of an existing one.

  • Identify Sponsor and Developer

The Sponsor and Developer are responsible for producing the documentation to support the Information Standards Notice (ISN), this includes: Standard Specification Implementation Plan Supporting Documents, for example, technical guidance etc.

  • Analysis and Data Modelling

The proposed information standard is analysed against existing standards within the NHS Data Model and Dictionary. Stakeholders are involved during this development stage to clarify and resolve any potential issues.

  • Draft Change Request

The Change Request: is a document that illustrates how the NHS Data Model and Dictionary is impacted by the proposed new standard is reviewed during the Information Standards Board for Health and Social Care appraisal process

  • Consultation Process

A draft Change Request may be made available on the NHS Data Model and Dictionary Service Consultation Website, where stakeholders are invited to comment on the suggested changes. For further information on the Consultation Website, see NHS Data Model and Dictionary Service Consultation Website. Comments are shared with the Information Standards Board for Health and Social Care.

  • Information Standards Board for Health and Social Care (ISB)

The Information Standards Board for Health and Social Care provide an independent mechanism for the assurance and approval of Information Standards for use in the NHS (England).  They ensure that new information standards are implementable, interoperable, fit for purpose and safe when implemented in the NHS and Social Care.

For each change, the Information Standards Board for Health and Social Care (ISB) may:

  1. Reject the Change
  2. Conditionally Approve the Change or
  3. Approve the Change 
     

1. Reject the Change (Change Rejected)

The Information Standards Board for Health and Social Care may reject the change, i.e. the change is not fit for purpose.

2. Conditionally Approve the Change (Further Analysis)

The change could be returned to the Sponsor, Developer and NHS Data Model and Dictionary Service for further analysis and to make changes to the submission documents and Change Request.

3. Approve the Change (Publishing of Information Standards Notices and Updating the NHS Data Model and Dictionary


What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the NHS Data Model and Dictionary Main Menu.

  •   Help Pages

If you need help using the NHS Data Model and Dictionary, access the Help pages.

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MUTUALLY EXCLUSIVE RELATIONSHIPS

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In some situations, Relationships may be Mutually Exclusive, i.e. either one or other Relationship may be present, but not both.

For example, a particular SERVICE REQUEST may relate to either a CARE PROFESSIONAL ORGANISATION or a SERVICE POINT not both at the same time.

This 'either/or' situation is shown by a line spanning the Relationships in question.

An example of Mutually Exclusive Relationships in diagrams is given below:

In some situations, Relationships may be Mutually Exclusive, i.e. either one or other Relationship may be present, but not both.

For example, a particular SERVICE REQUEST may relate to either a CARE PROFESSIONAL ORGANISATION or a SERVICE POINT not both at the same time.

This 'either/or' situation is shown by a line spanning the Relationships in question.

An example of Mutually Exclusive Relationships in diagrams is given below:


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MUTUALLY EXCLUSIVE RELATIONSHIPS - REDUCED ARC

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In some diagrams only one of the Mutually Exclusive Relationships may be present, the other, being not applicable to the diagram, being omitted.

For example, a particular diagram is concerned with SERVICE REQUESTS and requires the inclusion of SERVICE POINT, however, the second Mutually Exclusive Relationship to CARE PROFESSIONAL ORGANISATION is not relevant to the diagram and can be left out.

This omission is indicated by the straight line (arc) which normally spans the two Relationships being displayed in a reduced manner.

An example of a Reduced Mutually Exclusive Relationship Arc in diagrams is given below:

In some diagrams only one of the Mutually Exclusive Relationships may be present, the other, being not applicable to the diagram, being omitted.

For example, a particular diagram is concerned with SERVICE REQUESTS and requires the inclusion of SERVICE POINT, however, the second Mutually Exclusive Relationship to CARE PROFESSIONAL ORGANISATION is not relevant to the diagram and can be left out.

This omission is indicated by the straight line (arc) which normally spans the two Relationships being displayed in a reduced manner.

An example of a Reduced Mutually Exclusive Relationship Arc in diagrams is given below:


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NAVIGATION

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There are many ways to navigate the NHS Data Model and Dictionary.  Below are examples of how to access the information you require and the links to find out more about them: 

If you can't find the item you are looking for there alternative ways of locating it. Quick and Advanced Search Facilities allow for a general text search.

If you are you are interested in the reporting requirements for a specific healthcare area, Data Sets are a useful starting point. For example, organisations interested in reporting Mental Health activity may choose to navigate to the relevant definitions by accessing the Data Collections option.

This lists all the items in the NHS Data Model and Dictionary in alphabetical order.

If you want to understand the standards in relation to a specific area of healthcare, for example, a Referral Request, you can access:

  • Classes; which provide a definition of a Referral Request
  • Attributes; which detail the information recorded for a Referral Request
  • Diagrams; which detail the Classes, Key Attributes and Relationships relevant to a Referral Request.

If you are looking for a recently incorporated information standard or are looking for a specific ISN/DSCN number, the What's New page shows the information standards that have been incorporated into each release of the NHS Data Model and Dictionary. It also provides hyperlinks to the associated Information Standards Notices and Data Set Change Notices.


What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the NHS Data Model and Dictionary Main Menu.

  •   Help Pages

If you need help using the NHS Data Model and Dictionary, access the Help pages.

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NAVIGATION (RETIRED)  renamed from NAVIGATION

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NHS BUSINESS DEFINITIONS

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Each NHS Business Definition consists of freestanding text which describes an aspect of NHS activity. The text starts by identifying which generic class encompasses the activity. This is followed by an outline of the business rules which should be applied to the activity.

The NHS Business Definitions are separate from the logical data model and allow specific business areas to be defined in greater detail.

The names of NHS Business Definitions are distinguished from the Classes, Attributes and Data Elements by appearing in Title Case rather than CAPITALS (see the example below).

Where the name appears in text in Blue, it indicates that it is a hyperlink and if clicked on will display the definition for that NHS Business Definition.

An example of an NHS Business Definition is a Hospital Provider Spell, which is related to the logical class ACTIVITY GROUP.

To navigate to a NHS Business Definition:

  • Click on NHS Business Definitions on the left hand menu;
  • Click on a letter in the NHS Business Definition menu to display the list of NHS Business Definitions for that letter;
  • Click on the NHS Business Definition name to display the definition for a specific NHS Business Definition.

 For more information on NHS Business Definitions, see NHS Business Definitions Help.

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NHS BUSINESS DEFINITIONS

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NHS BUSINESS DEFINITIONS HELP

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The text for each NHS Business Definition starts by identifying which Class is used and is followed by a description of the item.

Each NHS Business Definition name is distinguished from Classes, Attributes and Data Elements by appearing in Title Case rather than UPPERCASE (see the example below) and where the name in text in Blue, it indicates that it is a hyperlink and if clicked on will display the definition for that NHS Business Definition.

An example of an NHS Business Definition is a Hospital Provider Spell, which is related to the Class ACTIVITY GROUP.

The following information is available on an NHS Business Definition:

  • "Description" tab: a definition of the NHS Business Definition which provides hyperlinks to other related definitions.
  • "Where Used" tab: every item where the NHS Business Definition is used within the NHS Data Model and Dictionary. 

What would you like to do next?

  •  NHS Data Model and Dictionary Content

View NHS Business Definitions in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on NHS Business Definitions, see the NHS Business Definitions Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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NHS DATA MODEL AND DICTIONARY ITEMS (RETIRED)  renamed from NHS DATA MODEL AND DICTIONARY ITEMS

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PUBLICATION DETAIL (RETIRED)

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PUBLICATION VERSION (RETIRED)  renamed from PUBLICATION VERSION

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RECURSIVE RELATIONSHIPS

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Some Classes can be associated with Classes of the same type to create a hierarchy.

For example, a CLINICAL INVESTIGATION RESULT ITEM may be related to a number of other CLINICAL INVESTIGATION RESULT ITEMS.

This association between the higher level class and its lower level subdivisions is indicated by a square line in the top right hand corner of the class.

An example of a Recursive Relationship in diagrams is given below:

Relationships can exist from a Class to itself and represent a hierarchy. These are known as self or recursive relationships. They are also described as a “Pigs Ear” by the way they are represented on a diagram. A simple example is that a Manager may be a Manger and also be managed by a Manager.

For example, within the NHS Data Model and Dictionary, a CLINICAL INVESTIGATION RESULT ITEM may be related to a number of other CLINICAL INVESTIGATION RESULT ITEMS.

This association between the higher level class and its lower level subdivisions is indicated by a square line in the top right hand corner of the class.

An example of a Recursive Relationship in diagrams is given below:


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RELATED DSCN-ISN HELP

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The Related DSCN/ISN page shows which Information Standards Notice or Data Set Change Notice made changes to an item.

The Related DSCN/ISN page can be found at the top right hand side under the Quick Search box on every page.


What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the NHS Data Model and Dictionary Main Menu.

  •   Demonstrations

For a demonstration on the Related DSCN/ISN page, see the Related DSCN/ISN Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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RELATIONSHIPS  renamed from CLASS RELATIONSHIPS

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Relationships between Classes are shown in diagrams with a line connecting the Classes as in the example below:

A Relationship shows how Classes are related to each other.

For example a PATIENT may be the subject of many ACTIVITIES, for example, have many Accident And Emergency Attendances.

Relationships between Classes are shown in Diagrams with a line connecting the Classes as in the example below:

Note: The numbers at the top and bottom of the connecting line are known as Cardinality.


Information concerning the relationship is conveyed by the number at the top and bottom of the connecting line, known as Relationship Cardinality.

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RELATIONSHIPS  renamed from CLASS RELATIONSHIPS

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SEARCH HELP

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There are two search facilities in the NHS Data Model and Dictionary:

  • Quick Search Facility

The NHS Data Model and Dictionary has a quick search facility to allow a general text search. This is available on all pages.

  • Advanced Search

The NHS Data Model and Dictionary has an Advanced search facility which is only available on the front page. The Advanced Search allows you to search by item. 


What would you like to do next?

  •  NHS Data Model and Dictionary Content

Access the Advanced Search or Main Menu to access the quick search.


  •   Demonstrations

For a demonstration on the Search Facilities, see the Search Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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SUPERTYPES AND SUBTYPES

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Certain groups of Classes share common properties and have their own unique properties.

For example, ACTIVITY GROUP and CARE ACTIVITY have an ACTIVITY IDENTIFIER as well as having their own unique properties.

ACTIVITY GROUP and CARE ACTIVITY are classed as 'subtypes' of ACTIVITY and as such inherit the properties of the 'supertype' as well as having their own properties.

An example of a 'Supertypes' and 'Subtypes' in diagrams is given below:

A Class may share common Attributes and Relationships with other Classes but also have some which are specific to that Class only.

For example, ACTIVITY GROUP and CARE ACTIVITY have an ACTIVITY IDENTIFIER as well as having their own unique properties.

ACTIVITY GROUP and CARE ACTIVITY are classed as 'subtypes' of ACTIVITY and as such inherit the properties of the 'supertype' as well as having their own properties.

An example of a 'Supertypes' and 'Subtypes' in diagrams is given below:


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SUPPORTING INFORMATION HELP

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Supporting Information provides additional information to help users understand and use the NHS Data Model and Dictionary.


What would you like to do next?

  •  NHS Data Model and Dictionary Content

View Supporting Information in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on Supporting Information, see the Supporting Information Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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SUPPORTING INFORMATION INTRODUCTION

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Supporting Information provides information to help users understand the NHS Data Model and Dictionary.

Use the following links to access more detailed information:

Codes

Organisations and Policies

NHS Data Model and Dictionary Information

Contacts/ Links


Supporting Information provides information to help users understand and use the NHS Data Model and Dictionary.

 For more information on Supporting Information, see Supporting Information Help.

Use the links below to access more detailed information:

 

Codes: Organisations and Policies: 
  
NHS Data Model and Dictionary Information: Contacts / Links: 
  

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SUPPORTING INFORMATION INTRODUCTION

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SUPPORTING INFORMATION MENU

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WHAT'S NEW: JULY 2010

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Release: July 2010

Information Standards Notices and Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1134 (Immediate - ISB 1067/2009 Amd 109/2010 National Workforce Dataset (NWD) Standard Specification v 2.2 Hyperlink to be added when the ISB website is updated
  • CR1082 (Immediate) - ISB 0153/2010 Critical Care Minimum Data Set
  • CR1121 (Immediate) - DSCN 17/2010 Retirement of Data Standard KC60 Central Return

Release: May 2010

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR957 (Immediate) - DSCN 19/2010 Central Returns: KA34 Ambulance Services

Release: March 2010

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1123 (1 April 2010) - DSCN 18/2010 Information Standards Notice (ISN)
  • CR1139 (Immediate) - DSCN 16/2010 Person Weight
  • CR1130 (Immediate) - DSCN 15/2010 Change of name for "The NHS Information Centre for health and social care"
  • CR1013 (April 2010) - DSCN 14/2010 Sexual and Reproductive Health Activity Dataset (SRHAD)
  • CR1125 (Immediate) - DSCN 13/2010 NHS Data Model and Dictionary Maintenance Update - Policy Definitions
  • CR1122 (Immediate) - DSCN 11/2010 Changes to Family Planning References

Release: January 2010

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1115 (Immediate) - DSCN 10/2010 Data Standards: Updating of e-Government Interoperability Framework and Government Data Standards Catalogue References

Release: December 2009

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1100 (Immediate) - DSCN 25/2009 NHS Prescription Services Update
  • CR1045 (1 December 2009) - DSCN 17/2009 Referral to Treatment Clock Stop Administrative Event
  • CR1003 (1 December 2009) - DSCN 16/2009 Commissioning Data Sets: Mandation of 18 Week Referral To Treatment Data Items

Release: November 2009

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1113 (Immediate) - DSCN 24/2009 Information Standards Board for Health and Social Care Update
  • CR1087 (Immediate) - DSCN 23/2009 Health Professions Council Update
  • CR1081 (Immediate) - DSCN 22/2009 Data Standards: NHS Data Model and Dictionary Maintenance Update
  • CR1019 (27 November 2009) - DSCN 21/2009 Data Standards: Organisation Data Service (ODS) - Optical Sites and Optical Headquarters
  • CR1034 (27 November 2009) - DSCN 20/2009 Data Standards: Organisation Data Service (ODS) - Care Homes in England and Wales and their Headquarters

Release: September 2009

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1065 (1 October 2009) - DSCN 15/2009 Data Standards: Organisation Data Service – Local Health Boards
  • CR1065 (1 October 2009) - DSCN 15/2009 Data Standards: Organisation Data Service Local Health Boards

Release: June 2009

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1014 (1 June 2009) - DSCN 13/2009 Religious and Other Belief System Affiliation
  • CR1074 (Immediate) - DSCN 12/2009 Data Standards: Care Quality Commission
  • CR1056 (Immediate) - DSCN 11/2009 Data Standards: NHS Data Model and Dictionary Maintenance Update
  • CR1072 (1 December 2009) - DSCN 10/2009 Data Standards: National Radiotherapy Data Set
  • CR1073 (Immediate) - DSCN 09/2009 Central Returns: Diagnostic Waiting Times and Activity Data Set
  • CR1066 (Immediate) - DSCN 08/2009 Data Standards: NHS Prescription Services and NHS Dental Services
  • CR1047 (1 April 2011) - DSCN 07/2009 Data Standards: Diabetic Retinopathy Screening Dataset v3.6 
  • CR1059 (Immediate) - DSCN 06/2009 Data Standard: National Workforce Data Set v2.1
  • CR914 (April 2008 (Retrospective)) - DSCN 05/2009 NHS Stop Smoking Services Quarterly Monitoring Return
  • CR899 (Immediate) - DSCN 02/2009 NHS Data Model and Dictionary Maintenance Update

Release: March 2009

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1001 (1 April 2009) - DSCN 03/2009 Introduction of Commissioning Data Set Schema Version 6-1 (2008-04-01) and update to Commissioning Data Set Schema Version 6-0 (2008-01-14)
  • CR976 (31 March 2009) - DSCN 26/2008 Subject: KP90 - Admissions, Changes in Status and Detentions under the Mental Health Act
  • CR1017 (1 April 2009) - DSCN 25/2008 Critical Care Minimum Data Set
  • CR1002 (1 April 2009) - DSCN 24/2008 Data Standards: Introduction of Commissioning Dataset Version 6.1
  • CR1016 (Immediate) - DSCN 23/2008 4 Byte Version of the Read Codes - Withdrawal

Release: December 2008

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1022 (1 January 2009) - DSCN 29/2008 Data Standards: 18 Weeks Referral to Treatment (RTT) Time, Performance Sharing
  • CR901 (Immediate) - DSCN 28/2008 Removal of references to EDIFACT and the NHS Wide Clearing Service (NWCS) 
  • CR843 (1 April 2009) - DSCN 22/2008 Data Standards: National Radiotherapy Data Set
  • CR1011 (1 January 2009) - DSCN 20/2008 Data Standards: National Cancer Waiting Times Minimum Data Set 

Release: November 2008

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1026 (3 November 2008) - DSCN 21/2008 Information Standard: Mental Health Act 2007 Mental Category

Release: August 2008

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR1018 (Immediate) - DSCN 19/2008 Data Standards: Change of Name for National Administrative Code Services (NACS) to Organisation Data Service (ODS)
  • CR956 (1 September 2008) - DSCN 18/2008 Central Return: Human Papillomavirus (HPV) Immunisation Programme – Vaccine Monitoring Minimum Dataset
  • CR956 (1 September 2008) - DSCN 18/2008 Central Return: Human Papillomavirus (HPV) Immunisation Programme Vaccine Monitoring Minimum Dataset
  • CR861 (Immediate) - DSCN 16/2008 Central Return:  Hospital and Community Services Complaints and General Practice (including Dental) Complaints - KO41(a) and KO 41(b)
  • CR964 (Immediate) - DSCN 14/2008 Central Return: 18 Weeks ‘Adjusted’ Referral to Treatment (RTT) Dataset
  • CR965 (Immediate) - DSCN 13/2008 Data Standards: Organisation Data Service (ODS) - Change to the Default Codes Set to Support Changes to GMS Contract
  • CR879 (Immediate) - DSCN 12/2008 Data Standards: Quarterly Monitoring: Cancelled Operations Data Set (QMCO)

Release: May 2008

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR502 (Immediate) - DSCN 10/2008 Data Standards: National Workforce Data Definitions (v2.0)
  • CR910 (1 April 2008) - DSCN 08/2008 Data Standards: National Direct Access Audiology Patient Tracking List (PTL) and Waiting Times (WT) data sets
  • CR900 (Immediate) - DSCN 07/2008 Data Standards: Inter-Provider Transfer Administrative Minimum Data Set
  • CR934 (1 April 2008) - DSCN 06/2008 Data Standards: Mental Health Minimum Data Set (version 3.0)
  • CR935 (Immediate) - DSCN 05/2008 Data Standards: 18 Weeks Rules Suite
  • CR925 (1 September 2008) - DSCN 04/2008 Genitourinary Medicine Clinic Activity Data Set Change to an Information Standard
  • CR942 (1 June 2008) - DSCN 03/2008 General Practice and General Medical Practitioner (GMP) - changes resulting from the introduction of the General Medical Services (GMS) Contract

Release: February 2008

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR812 (Immediate) - DSCN 01/2008 Central Return: Diagnostics Waiting Times Census Data Set
  • CR881 (31 December 2007) - DSCN 42/2007 Central Return: Referral To Treatment Summary Patient Tracking List
  • CR904 (Immediate) - DSCN 41/2007 Data Standards: Admission Intended Procedure Update
  • CR824 (1 February 2008) - DSCN 39/2007 Data Standards: 48 Hour Genitourinary Medicine Access Monthly Monitoring (GUMAMM)

Release: November 2007

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR919 (Immediate) - DSCN 38/2007 Data Standards: Mental Health Minimum Data Set Schema
  • CR814 (1 April 2008) - DSCN 37/2007 Data Standards: Introduction of Mental Health Minimum Data Set version 2.1
  • CR930 (31 December 2007) - DSCN 35/2007 Data Standards: A correction to the version 6 Commissioning Data Set schema
  • CR834 (Immediate) - DSCN 34/2007 Data Standards: Referral Request Received Date
  • CR875 (Immediate) - DSCN 33/2007 Data Standards: National Administrative Codes Service: Introduction of codes for the new Pan SHAs
  • CR880 (Immediate) - DSCN 29/2007 Data Standards: Amendments to Doctor Index Number (DIN) Description

Release: August 2007

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR845 (Immediate) - DSCN 28/2007 Data Standards: Treatment Function Code (Referral to Treatment Period)
  • CR831 (1 October 2007) - DSCN 27/2007 Data Standards: Update to Commissioning Data Set XML Schema v5
  • CR825 (1 October 2007) - DSCN 16/2007 Data Standards: Source of Referral for Outpatients (18 Weeks)

Release: June 2007

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR799 (31 December 2007) - DSCN 18/2007 Data Standards: Introduction of Commissioning Data Set Version 6
  • CR833 (Immediate) - DSCN 17/2007 Data Standards: Introduction of Commissioning Data Set validation table
  • CR801 (Immediate) - DSCN 15/2007 Data Standards: Cover of Vaccination Evaluated Rapidly (COVER) Return

Release: May 2007

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR800 (31 December 2007) - DSCN 14/2007 Commissioning Data Set Schema Version 6-0
  • CR856 (1 October 2007) - DSCN 13/2007 Data Standards: Discharge Ready Date
  • CR869 (Immediate) - DSCN 12/2007 Data Standards: Update to Clinical Coding Introduction
  • CR827 (1 October 2007) - DSCN 09/2007 Data Standards: Earliest Reasonable Offer Date
  • CR817 (1 October 2007) - DSCN 08/2007 Data Standards: Introduction of Age into Commissioning Data Sets
  • CR849 (May 2007) - DSCN 07/2007 National Administrative Codes Service: Introduction of new identification codes for Dental Consultants
  • CR822 (Immediate) - DSCN 06/2007 Data Standards: Update to Organisation Codes
  • CR850 (Immediate) - DSCN 05/2007 National Administrative Codes Service: Amendments to Default Codes
  • CR786 (1 April 2007) - DSCN 04/2007 Quarterly Monitoring Accident and Emergency Services (QMAE) Central Return

Release: February 2007

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR811 (Immediate) - DSCN 03/2007 Diagnostic Waiting Times and Activity
  • CR826 (1 October 2007) - DSCN 02/2007 Extension of Treatment Function to Support the Measurement of 18 Week Referral to Treatment Periods
  • CR813 (1 April 2007) - DSCN 01/2007 Paediatric Critical Care Minimum Data Set
  • CR768 (1 January 2007) - DSCN 18/2006 Changes to the NHS Data Dictionary to support the measurement of 18 week referral to treatment periods
  • CR798 (6 November 2006) - DSCN 19/2006 Commissioning Data Set (CDS) Version 5 XML Message Schema
  • CR776 (1 October 2006) - DSCN 05/2006 Data Standards: Accident and Emergency Enhancements to Investigation and Treatment Codes

Release: September 2006

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR795 (31 October 2006) - DSCN 22/2006 Organisation Codes / Organisation Site Codes
  • CR792 (1 April 2007) - DSCN 15/2006 Neonatal Critical Care
  • CR719 (1 April 2006) - DSCN 09/2006 Measuring and Recording of Waiting Times
  • CR791 (1 April 2007) - DSCN 13/2006 Priority Type
  • CR774 (1 September 2006) - DSCN 12/2006 Person Marital Status

Release: May 2006

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR764 (1 April 2006) - DSCN 08/2006 Diagnostics waiting times and activity
  • Correction to menu structure to include Critical Care Minimum Data Set

Release: April 2006

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR608 (1 October 2006) - DSCN 07/2006 Introduction of Commissioning Data Set Version 5 and its associated XML schema into the NHS Data Dictionary.
  • CR756 (1 September 2005) - DSCN 19/2005 PbR Commissioning for Out of Area Treatments (OATs) and Charge-Exempt Overseas Visitors
  • CR724 (1 April 2006) - DSCN 13/2005 Critical Care Minimum Data Set
  • CR754 (1 April 2006) - DSCN 17/2005 Treatment Function and Main Specialty Code Revisions
  • CR763 (1 April 2006) - DSCN 20/2005 New Treatment Functions for therapy services and anticoagulant service
  • CR767 (Immediate) - DSCN 02/2006 Referral Request Received Date
  • CR690 (1 September 2005) - DSCN 16/2005 Marital Status

Release: August 2005

Data Set Change Notices incorporated into the NHS Data Model and Dictionary:

  • CR555 (1 April 2005) - DSCN 11/2005 Data Standards: COVER - Hepatitis B immunisation for babies
  • CR715 (Immediate) - DSCN 10/2005 Data Standards: Treatment Function Codes - correction and clarification of names and descriptions
  • CR706 (1 April 2005) - DSCN 09/2005 Data Standards: Cancer Registration Data Set
  • CR691 (1 July 2005) - DSCN 06/2005 Data Standards: NSCAG Commissioner Code

For all Information Standards Notices and Data Set Change Notices, see the Information Standards Board for Health and Social Care Website

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The What's New page shows the information standards that have been incorporated into each release of the NHS Data Model and Dictionary.

The associated Information Standards Notices and Data Set Change Notices can be accessed by selecting the hyperlink.

It is important to note that the Information Standards Notice implementation date determines when it will be published in the NHS Data Model and Dictionary.
Information Standards Notices not yet incorporated into the NHS Data Model and Dictionary are still assured standards. 


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  •  NHS Data Model and Dictionary Content

View What's New in the NHS Data Model and Dictionary.

  •   Demonstrations

For a demonstration on What's New, see the What's New Demonstration.

Please note that you will need flash player to view these demonstrations. If you do not have flash player, contact your organisation's technical support for further information.

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For enquiries, please email datastandards@nhs.net