Module heidi::nhs

heidi implements the NHS number validation “Modulus 11”. See: https://www.datadictionary.nhs.uk/data_dictionary/attributes/n/nhs/nhs_number_de.asp

Example numbers were generated with http://danielbayley.uk/nhs-number/

The NHS Number is a unique number allocated to every patient registered with the NHS in England, Wales and the Isle of Man.

In short, an NHS Number is always 10 digits long sometimes formatted in a 3-3-4 manner. For example, 6541003238 can be presented as 654 100 3238.

The last digit of the number is the “check digit” to aid in integrity checks.

Structs

Number

Represents an NHS Number as a list of 9 digits (Number.digits()) plus 1 check digit (Number.checkdigit()).

Functions

lottery

Returns a random NHS Number.

Type Definitions

Digit

A digit can be from 0 to 9.