Z79.634
Billable codeLong term (current) use of topoisomerase inhibitor
The ICD-10 code for long term (current) use of topoisomerase inhibitor is Z79.634.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Long term (current) use of etoposide
- Long term (current) use of irinotecan
- Long term (current) use of topotecan
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Z79.630Long term (current) use of alkylating agent
- Z79.631Long term (current) use of antimetabolite agent
- Z79.632Long term (current) use of antitumor antibiotic
- Z79.633Long term (current) use of mitotic inhibitor
- Z79.634Long term (current) use of topoisomerase inhibitor
Associated MS-DRGs
Z79.634 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.