Abnormal tumor markers
7 codes in this section
About Section R97
Section R97 (R97-R97) covers abnormal tumor markers. It sits within the Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified chapter (R00-R99). This section contains 7 ICD-10-CM codes, 5 billable diagnoses you can submit on a claim, and 2 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in R97
Grouped by 3-character root code. Click any code for full detail.
| R97.0 | Elevated carcinoembryonic antigen [CEA] | Billable |
| R97.1 | Elevated cancer antigen 125 [CA 125] | Billable |
| R97.2 | Elevated prostate specific antigen [PSA] | Header |
| R97.20 | Elevated prostate specific antigen [PSA] | Billable |
| R97.21 | Rising PSA following treatment for malignant neoplasm of prostate | Billable |
| R97.8 | Other abnormal tumor markers | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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