Skip to content

Z79.623

Billable

Long term (current) use of mammalian target of rapamycin (mTOR) 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 an mTOR inhibitor, a medication that suppresses immune function and is commonly used after organ transplants or for certain cancers.

Coding Tips

  • Document this code when patients are on medications like sirolimus, everolimus, or temsirolimus
  • Often used in transplant patients; ensure the transplant status code is also reported

Code Hierarchy

Open Z79.623 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.