Z79
⚠ Non-billable
Long term (current) drug therapy
ICD-10-CM · FY2026 · Factors Influencing Health Status
Code
Z79
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Includes
- long term (current) drug use for prophylactic purposes
Excludes2 — not included here, but may code together
- drug abuse and dependence (F11-F19)
- drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)
Code also
- any therapeutic drug level monitoring (Z51.81)
Frequently asked questions
What is ICD-10 code Z79?
ICD-10-CM code Z79 represents Long term (current) drug therapy. It is a non-billable header code requiring a more specific subcategory in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z79 billable?
No. Z79 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Z79 in?
Z79 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
Related codes in the Z79 category
Z79.0
Long term (current) use of anticoagulants and antithrombotics/antiplatelets
Non-billable
Z79.1
Long term (current) use of non-steroidal anti-inflammatories (NSAID)
Billable
Z79.2
Long term (current) use of antibiotics
Billable
Z79.3
Long term (current) use of hormonal contraceptives
Billable
Z79.4
Long term (current) use of insulin
Billable
Z79.5
Long term (current) use of steroids
Non-billable
Z79.6
Long term (current) use of immunomodulators and immunosuppressants
Non-billable
Z79.8
Other long term (current) drug therapy
Non-billable
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