ICD-10-CM > R00-R99 > R97-R97 > R97 R97 Abnormal tumor markers Non-Billable/Non-Specific Applicable To Elevated tumor associated antigens [TAA]Elevated tumor specific antigens [TSA] Codes R97.0Elevated carcinoembryonic antigen [CEA]R97.1Elevated cancer antigen 125 [CA 125]R97.2Elevated prostate specific antigen [PSA]R97.20Elevated prostate specific antigen [PSA]R97.21Rising PSA following treatment for malignant neoplasm of prostateR97.8Other abnormal tumor markers