R97.1 Elevated cancer antigen 125 [CA 125]

Billable ICD-10-CM code, FY2026.

Applies from R97 Abnormal tumor markers

Applicable to

• Elevated tumor associated antigens [TAA]
• Elevated tumor specific antigens [TSA]

MS-DRG index

Defines the logic of DRG(s) 947-948 in MDC 23.

Approximate ICD-9-CM (GEMs)

• 795.82 Elevated cancer antigen 125 [CA 125]

Diagnosis Index entries for R97.1

• Elevated, elevation › cancer antigen 125 [CA 125]

Nearby codes

• R97 Abnormal tumor markers
• R97.0 Elevated carcinoembryonic antigen [CEA]
• R97.1 Elevated cancer antigen 125 [CA 125] (this code)
• R97.2 Elevated prostate specific antigen [PSA]
• R97.20 Elevated prostate specific antigen [PSA]
• R97.21 Rising PSA following treatment for malignant neoplasm of prostate
• R97.8 Other abnormal tumor markers