Billing and Coding: Assays for Vitamins and Metabolic Function

This billing and coding guidance directs that assays without specific CPT codes (functional intracellular analysis and total antioxidant function) should be billed with CPT 84999 and must include a note identifying the test on the claim. Coverage is determined by LCD L34914; do not bill for non-covered services as covered and append the appropriate modifier, and maintain legible medical records that support the ICD-10 and CPT/HCPCS codes used.

"For tests that currently lack specific CPT codes (functional intracellular analysis and total antioxidant function), bill using CPT 84999 and add a note identifying which test was performed in the ..."

Sign up to see full coverage criteria, indications, and limitations.