Validation Rules
Membership number formats
We’ve got access to the membership databases for Aviva, AXA Health, Bupa, Cigna and Vitality and invoices are validated against these. The other insurers validate against membership number formatting rules.
The validation format criteria are set out for each insurer and use the following key:
- A = Letter
- N = Number
- X = Letter or Number
A couple of examples:
- AANNNN = 2 letters followed by 4 numbers
- NNNNNNXXA = 6 numbers, followed by 2 characters than can either be a number or a letter, followed by a letter
Where other letters and specific letters or symbols are used, this is clearly shown.
Aetna
There are thirteen formats that are recognised.
- WNNNNNNNNN = the letter W, followed by 9 numbers
- WNNNNNNNNN-NN = the letter W, followed by 9 numbers, followed by a hyphen (-), followed by 2 numbers
- WNNNNNNNNNN = the letter W, followed by 10 numbers
- WNNNNNNNNNN-NN = the letter W, followed by 10 numbers, followed by a hyphen (-), followed by 2 numbers
- WNNNN⎵NNNNN = the letter W, followed by 4 numbers, followed by a space, followed by 5 numbers
- WNNNN⎵NNNNN-NN = the letter W, followed by 4 numbers, followed by a space, followed by 5 numbers, followed by a hyphen (-), followed by 2 numbers
- WNNNN⎵NNNNNN = the letter W, followed by 4 numbers, followed by a space, followed by 6 numbers
- WNNNN⎵NNNNNN-NN = the letter W, followed by 4 numbers, followed by a space, followed by 6 numbers, followed by a hyphen (-), followed by 2 numbers
- NNNNN = 5 numbers
- NNNNNN = 6 numbers
- NNNNNNN = 7 numbers
- NNNNNNNN = 8 numbers
- NNNNNNNNN = 9 numbers
Alliance Health
There are three formats that are recognised.
- NNNNNN = 6 numbers
- NNNNNNN = 7 numbers
- NNNNNNNN = 8 numbers
Allianz Worldwide
The letter P followed by between 4 to 9 numbers.
From April 2023 Allianz can process invoices on behalf of Aetna for their Americas policy holders – the following formats are also recognised. More information on what that means can be found here.
- WNNNNNNNNN = the letter W, followed by 9 numbers
- WNNNNNNNNN-NN = the letter W, followed by 9 numbers, followed by a hyphen (-), followed by 2 numbers
- WNNNNNNNNNN = the letter W, followed by 10 numbers
- WNNNNNNNNNN-NN = the letter W, followed by 10 numbers, followed by a hyphen (-), followed by 2 numbers
- WNNNN⎵NNNNN = the letter W, followed by 4 numbers, followed by a space, followed by 5 numbers
- WNNNN⎵NNNNN-NN = the letter W, followed by 4 numbers, followed by a space, followed by 5 numbers, followed by a hyphen (-), followed by 2 numbers
- WNNNN⎵NNNNNN = the letter W, followed by 4 numbers, followed by a space, followed by 6 numbers
- WNNNN⎵NNNNNN-NN = the letter W, followed by 4 numbers, followed by a space, followed by 6 numbers, followed by a hyphen (-), followed by 2 numbers
Bupa Global
Must be 17 characters long.
- XX-NNNN-NNNN-NNNN = 2 characters (often the letters BI), followed by a hyphen (-), followed by 4 numbers, followed by a hyphen (-), followed by 4 numbers, followed by a hyphen (-), followed by 4 numbers
Exeter Friendly
There are seven formats that are recognised.
- NNNNN = 5 numbers
- NNNNNN = 6 numbers
- NNNNNNN = 7 numbers
- NNNNNNNNNN = 10 numbers
- NNNNNNNNPPNN = 8 numbers, followed by the letter P, followed by the letter P, followed by 2 numbers
- WINNNNNNNN = the letter W, followed by the letter I, followed by 8 numbers
- WDNNNNNNNN = the letter W, followed by the letter D, followed by 8 numbers
WPA
There are five formats that are recognised.
- NNNNN = 5 numbers
- NNNNNN = 6 numbers
- NNNNNNN = 7 numbers
- NNNNNNNN = 8 numbers
- NNNNNNNNN = 9 numbers
