Appendix E - National Coverage Determinations Manual / GAMMA_GLUTAMYL_TRANSFERASE

Why This Topic Matters

GGT testing is often reviewed in the context of liver and hepatobiliary evaluation, and coverage guidance can affect when the test is considered appropriate for billing and medical necessity review. Understanding the policy helps teams align laboratory ordering, documentation, and claim review with Medicare guidance.

Article Sections

1. Gamma Glutamyl Transferase

   Introduces the test and describes its general role in hepatobiliary assessment and liver-related evaluation. The section provides background context for the coverage policy.

2. Indications

   Lists the broad clinical circumstances and disease categories associated with the test in this policy. The content focuses on general situations involving liver, gastrointestinal, pancreatic, transplant, and related evaluation.

3. Limitations

   Summarizes situations in which repeat testing or further evaluation is discussed as limited by the policy. The section addresses general constraints tied to use in ongoing assessment and monitoring.