Brian Dunning's FileMaker Custom Functions

fnValidMBI ( MBI )

Validate MBI (Medicare Beneficiary Identification)

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Travis L. Herring   Travis L. Herring
Travis L Herring MD PA

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  Sample input:
  Sample output:
"Invalid MBI. There are not exactly 11 characters. Character value error at position(s) 10, 11."

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

FileMaker custom function fnValidMBI(MBI) checks the supplied MBI identification and returns an empty value if valid. If not valid, the return value is an explanation of errors found. This format and rules for MBI are to be implemented after April 2018 and replace the old format for MC numbers which were based on the social security number, SSN.



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Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

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