Skip to content
HCC Buddy home

Z79.634

Billable

Long term (current) use of topoisomerase inhibitor

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 a topoisomerase inhibitor, a chemotherapy drug that prevents cancer cells from repairing their DNA.

Coding Tips

  • •Document for etoposide, irinotecan, topotecan, or doxorubicin use
  • •Report alongside malignancy codes and monitor for secondary malignancy risk

Code Hierarchy

└Z79Long term (current) drug therapy└Z79.6Long term (current) use of immunomodulators and immunosuppressants└Z79.63Long term (current) use of chemotherapeutic agent└Z79.634Long term (current) use of topoisomerase inhibitor
└Z79.634Long term (current) use of topoisomerase inhibitor

Open Z79.634 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