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Oncology & Hematology Coding Alert

Oncology/Hematology Coding:

Look to These Dx for CA 19-9 Immunoassay Necessity

Published on Fri Aug 01, 2025

Question: What ICD-10-CM code should I use to prove medical necessity if our provider orders a CA 19-9 blood test with CPT® code 86301? California Subscriber Answer: According to Medline, CA 19-9 (cancer antigen 19-9) is a protein that acts as a type of tumor marker, which are “substances made by cancer cells or by normal cells in response to cancer in [...]
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Oncology & Hematology Coding Alert