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ICD-10-CM tabular list

R97Abnormal tumor markers

ICD-10-CM codes R97 cover abnormal tumor markers, within symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified. The block holds 7 codes across 1 category, of which 5 are billable and 2 are header codes that cannot be submitted on a claim.

What else to watch in R97

  • 5 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.

Categories in R97

ICD-10-CMFY2026-Apr· effective April 1, 2026