2026 ICD-10-CM Diagnosis Code Z79Long term (current) drug therapy

ICD-10-CM Codes›Z00–Z99›Z77-Z99›current

ICD-10-CM Z79
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z79 is a non-billable ICD-10-CM category code for long term (current) drug therapy, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z79.01, Z79.02, Z79.1, and Z79.2.

Code Identity

ICD-10-CM Code
Z79
Billable Status
No — Non-Billable Category
Code Describes
Long term (current) drug therapy
Short Description
Long term (current) drug therapy
Same as the full description in the CMS dataset.
Chapter
Z77-Z99
Persons with potential health hazards related to family and personal history and certain conditions influencing health status

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategorycurrentLong term drug therapy (Z79)
This CodeZ79Long term (current) drug therapy

Specific Coding for Long term (current) drug therapyOverview

Non-specific codes like Z79 require more characters. Use one of these billable codes instead:

  • Z79.0 for Long term (current) use of anticoagulants and antithrombotics/antiplatelets

  • Use Z79.01 for Long term (current) use of anticoagulants

  • Use Z79.02 for Long term (current) use of antithrombotics/antiplatelets

  • Use Z79.1 for Long term (current) use of non-steroidal anti-inflammatories (NSAID)

  • Use Z79.2 for Long term (current) use of antibiotics

  • Use Z79.3 for Long term (current) use of hormonal contraceptives

  • Use Z79.4 for Long term (current) use of insulin

  • Z79.5 for Long term (current) use of steroids

  • Use Z79.51 for Long term (current) use of inhaled steroids

  • Use Z79.52 for Long term (current) use of systemic steroids

  • Z79.6 for Long term (current) use of immunomodulators and immunosuppressants

  • Use Z79.60 for Long term (current) use of unspecified immunomodulators and immunosuppressants

  • Use Z79.61 for Long term (current) use of immunomodulator

  • Z79.62 for Long term (current) use of immunosuppressant

  • Z79.63 for Long term (current) use of chemotherapeutic agent

  • Use Z79.64 for Long term (current) use of myelosuppressive agent

  • Use Z79.69 for Long term (current) use of other immunomodulators and immunosuppressants

  • Z79.8 for Other long term (current) drug therapy

  • Z79.81 for Long term (current) use of agents affecting estrogen receptors and estrogen levels

  • Use Z79.82 for Long term (current) use of aspirin

  • Use Z79.83 for Long term (current) use of bisphosphonates

  • Use Z79.84 for Long term (current) use of oral hypoglycemic drugs

  • Use Z79.85 for Long-term (current) use of injectable non-insulin antidiabetic drugs

  • Z79.89 for Other long term (current) drug therapy

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • long term (current) drug use for prophylactic purposes

Code Also

  • any therapeutic drug level monitoring Z51.81

Type 2 Excludes

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

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z79Overview

Is Z79 (Long term (current) drug therapy) a billable code?

No. This is a category header that groups the codes for long term (current) drug therapy, and headers cannot be submitted on claims. Claims for long term (current) drug therapy need a more specific code from this category, such as Z79.01, Z79.02, and Z79.1.