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CHI Number (Scotland): 010 101 0000 to 311 299 9999
Health and Care Number (Northern Ireland): 320 000 0010 to 399 999 9999
NHS Number (England and Wales): 400 000 0000 to 999 999 9999
Sandbox
PKB sandbox (sandbox.patientsknowbest.com) will only accept NHS numbers starting with 9 or a 5 and CHI and H&C numbers where the 7th and 8th digits are both set to 9. This is to help prevent accidental submission of real patient data to the sandbox environment.
Local identifiers
You will need to agree with PKB what local identifiers you would like to send through.
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