Skip to content
HCC Buddy home

Z79.631

Billable

Long term (current) use of antimetabolite agent

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A patient is currently taking an antimetabolite agent, a chemotherapy drug that interferes with cancer cell metabolism and DNA synthesis.

Coding Tips

  • •Use for medications like methotrexate, 5-fluorouracil, gemcitabine, or cytarabine
  • •Document alongside the primary malignancy code and monitor for bone marrow suppression

Code Hierarchy

└Z79Long term (current) drug therapy└Z79.6Long term (current) use of immunomodulators and immunosuppressants└Z79.63Long term (current) use of chemotherapeutic agent└Z79.631Long term (current) use of antimetabolite agent
└Z79.631Long term (current) use of antimetabolite agent

Open Z79.631 in the Interactive Encoder

See full code details, AI coding tips, HCC mappings, and related codes in our interactive encoder. Start your 14-day Pro trial — no credit card required.

Open in EncoderStart 14-Day Pro Trial