Z79.634Billable
Long term (current) use of topoisomerase inhibitor
- Chapter
- 21. Factors influencing health status and contact with health services
- Category
- Z79
- Effective date
- October 1, 2026
Related codes in category Z79
Z79Long term (current) drug therapyZ79.0Long term (current) use of antocoag/antithrom/angiplateZ79.01Long term (current) use of anticoagulantsYesZ79.02Long term (current) use of antithrombotics/antiplateletsYesZ79.1Long term (current) use of non-steroidal non-inflam (NSAID)YesZ79.2Long term (current) use of antibioticsYesZ79.3Long term (current) use of hormonal contraceptivesYesZ79.4Long term (current) use of insulinYesZ79.5Long term (current) use of steroidsZ79.51Long term (current) use of inhaled steroidsYesZ79.52Long term (current) use of systemic steroidsYesZ79.6Long term (crnt) use of immunomodulator & immunosuppressant
Frequently asked questions
What is ICD-10 code Z79.634?
Z79.634 is an ICD-10-CM diagnosis code for Long term (current) use of topoisomerase inhibitor.
Is Z79.634 a billable code?
Yes. Z79.634 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is Z79.634 in?
Z79.634 falls under Chapter 21: Factors influencing health status and contact with health services.
When did Z79.634 become effective?
Z79.634 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Z79.634?
Z79.634 belongs to category Z79, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.