R97.1
Billable codeElevated cancer antigen 125 [CA 125]
The ICD-10 code for elevated cancer antigen 125 [ca 125] is R97.1.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- R97.0Elevated carcinoembryonic antigen [CEA]
- R97.2Elevated prostate specific antigen [PSA]non-billable header
- R97.8Other abnormal tumor markers
- R97.1Elevated cancer antigen 125 [CA 125]
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 79582
Associated MS-DRGs
R97.1 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.