R97: Abnormal tumor markers
Codes under R97 (Abnormal tumor markers). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| R97.0 | Elevated carcinoembryonic antigen [CEA] | ✓ |
| R97.0 | Elevated carcinoembryonic antigen [CEA] | ✓ |
| R97.1 | Elevated cancer antigen 125 [CA 125] | ✓ |
| R97.1 | Elevated cancer antigen 125 [CA 125] | ✓ |
| R97.2 | Elevated prostate specific antigen [PSA] | — |
| R97.2 | Elevated prostate specific antigen [PSA] | — |
| R97.8 | Other abnormal tumor markers | ✓ |
| R97.8 | Other abnormal tumor markers | ✓ |
| R97.20 | Elevated prostate specific antigen [PSA] | ✓ |
| R97.20 | Elevated prostate specific antigen [PSA] | ✓ |
| R97.21 | Rising PSA following treatment for malignant neoplasm of prostate | ✓ |
| R97.21 | Rising PSA following treatment for malignant neoplasm of prostate | ✓ |
Frequently asked questions
What is ICD-10-CM code R97?
R97 is an ICD-10-CM category covering Abnormal tumor markers. It contains 12 more specific diagnosis codes, 10 of which are billable.
Is R97 a billable code?
No — R97 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example R97.0 — Elevated carcinoembryonic antigen [CEA]). 10 of the 12 codes under R97 are billable.
What codes fall under R97?
R97 includes R97.0, R97.0, R97.1, R97.1, R97.2, plus 7 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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