UK Government Data Standards Catalogue (GDSC), Version 2.0, Agreed 01.01.02. GDSC:
NHS NUMBER is the same as attribute NHS NUMBER.
The NHS NUMBER is 10 numeric digits in length. The tenth digit is a check digit used to confirm its validity. The check digit is validated using the Modulus 11 algorithm and the use of this algorithm is mandatory. There are 5 steps in the validation of the check digit:
|Step 1||Multiply each of the first nine digits by a weighting factor as follows:|
(starting from the left)
|Step 2||Add the results of each multiplication together.|
|Step 3||Divide the total by 11 and establish the remainder.|
|Step 4||Subtract the remainder from 11 to give the check digit.
If the result is 11 then a check digit of 0 is used.
If the result is 10 then the NHS NUMBER is invalid and not used.
|Step 5||Check the remainder matches the check digit. If it does not, the NHS NUMBER is invalid.|
NHS Strategic Tracing Service: http://nww.nhsia.nhs.uk/nsts/pages/faq.asp
UK Government Data Standards Catalogue
|Data Element||NHS Number|
|Is Part Of||
|Date Agreed||1 January 2002|
|Description||A number used to identify a person uniquely within the NHS in England and Wales.|
|Business Format||10 numeric|
|Element Type||Data Item|
Step 2 Add the results of each multiplication together.
Step 3 Divide the total by 11 and establish the remainder.
Step 4 Subtract the remainder from 11 to give the check digit. If the result is 11 then a check digit of 0 is used. If the result is 10 then the NHS NUMBER is invalid and not used.
Step 5 Check the remainder matches the check digit. If it does not, the NHS NUMBER is invalid.
|Owner||Department of Health|
|Based On||Department of Health|
This data element is also known by these names: