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Z79

Non-billable

Long term (current) drug therapy

Z79 is the ICD-10-CM code for Long term (current) drug therapy. It is a non-billable category code — use a more specific child code such as Z79.0 for billing.

Status
Header (non-billable)
Chapter
Z00-Z99
Subcodes
8
Edition
FY2026

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

Includes

  • •long term (current) drug use for prophylactic purposes

Excludes2 — not included here

  • •drug abuse and dependence (F11-F19)
  • •drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)

Notes

  • •any therapeutic drug level monitoring (Z51.81)

Frequently asked questions

What is ICD-10 code Z79?
Z79 is the ICD-10-CM code for "Long term (current) drug therapy". It falls under Z00-Z99 Factors influencing health status and contact with health services.
Is Z79 a billable code?
No — Z79 is a non-billable header code. Use a more specific child code (such as Z79.0) for billing.
What are the subcodes of Z79?
Z79 has 8 more specific child codes, including Z79.0, Z79.1, Z79.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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