Z79 Long term (current) drug therapy
The ICD-10-CM code for Long term (current) drug therapy is Z79 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- Z77-Z99: Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
- Category Z79
- 41 codes (32 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
Use of insulin/oral/injectable drugs when type not indicated3) Diabetes mellitus and the use of insulin, oral hypoglycemics, and injectable non-insulin drugs If the documentation in a medical record does not indicate the type of diabetes but does indicate that the patient uses insulin, code E11-, Type 2 diabetes mellitus, should be assigned. Additional code(s) should be assigned from category Z79 to identify the long-term (current) use of insulin, oral hypoglycemic drugs, or injectable non-insulin antidiabetic, as follows:
Secondary diabetes—assign Z79 for long-term drug use(a) Secondary diabetes mellitus and the use of insulin, oral hypoglycemic drugs, or injectable non-insulin drugs For patients with secondary diabetes mellitus who routinely use insulin, oral hypoglycemic drugs, or injectable non-insulin drugs, additional code(s) from category Z79 should be assigned to identify the long-term (current) use of insulin, oral hypoglycemic drugs, or non-injectable non-insulin drugs as follows:
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026