Z79.631

✓ Billable

Long term (current) use of antimetabolite agent

Factors influencing health status and contact with health services (Z00-Z99)

Also Known As

Long term (current) use of 5-fluorouracilLong term (current) use of 6-mercaptopurineLong term (current) use of cytarabineLong term (current) use of methotrexate

✅ No additional coding notes for Z79.631

🧪 Validate Combinations

Add Z79.631 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeZ79.631

BillableYes

ParentZ79.63

CategoryFactors influencing health status and contact with health services (Z00-Z99)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)