Billing and Coding: Vitamin D Assay Testing

The following coding and billing guidance is to be used with its associated Local coverage determination. Documentation must clearly indicate the necessity for the test(s), any and all repeat testing and frequency of testing.The medical record must be made available to Medicare upon request.The HCPCS/CPT code(s) may be subject to Correct Coding Initiative (CCI) edits. This policy does not take precedence over CCI edits. Please refer to the CCI for correct coding guidelines and specific applicable code combinations prior to billing Medicare.When the documentation does not meet the criteria for the service rendered or the documentation does not establish the medical necessity for the services, such services will be denied as not reasonable and necessary under Section 1862(a)(1) of the Social Security Act.