Is Z79 a billable code?
No. Z79 is a header code that groups 32 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
Z79: Long term (current) drug therapy
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
Z79 groups related diagnoses under long term (current) drug therapy. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under Z79
- Z79.01Long term (current) use of anticoagulants
- Z79.02Long term (current) use of antithrombotics/antiplatelets
- Z79.1Long term (current) use of non-steroidal anti-inflammatories (NSAID)
- Z79.2Long term (current) use of antibiotics
- Z79.3Long term (current) use of hormonal contraceptives
- Z79.4Long term (current) use of insulin
- Z79.51Long term (current) use of inhaled steroids
- Z79.52Long term (current) use of systemic steroids
- Z79.60Long term (current) use of unspecified immunomodulators and immunosuppressants
- Z79.61Long term (current) use of immunomodulator
- Z79.620Long term (current) use of immunosuppressive biologic
- Z79.621Long term (current) use of calcineurin inhibitor
- Z79.622Long term (current) use of Janus kinase inhibitor
- Z79.623Long term (current) use of mammalian target of rapamycin (mTOR) inhibitor
- Z79.624Long term (current) use of inhibitors of nucleotide synthesis
- Z79.630Long term (current) use of alkylating agent
- Z79.631Long term (current) use of antimetabolite agent
- Z79.632Long term (current) use of antitumor antibiotic
- Z79.633Long term (current) use of mitotic inhibitor
- Z79.634Long term (current) use of topoisomerase inhibitor
- Z79.64Long term (current) use of myelosuppressive agent
- Z79.69Long term (current) use of other immunomodulators and immunosuppressants
- Z79.810Long term (current) use of selective estrogen receptor modulators (SERMs)
- Z79.811Long term (current) use of aromatase inhibitors
- Z79.818Long term (current) use of other agents affecting estrogen receptors and estrogen levels
- Z79.82Long term (current) use of aspirin
- Z79.83Long term (current) use of bisphosphonates
- Z79.84Long term (current) use of oral hypoglycemic drugs
- Z79.85Long-term (current) use of injectable non-insulin antidiabetic drugs
- Z79.890Hormone replacement therapy
- Z79.891Long term (current) use of opiate analgesic
- Z79.899Other long term (current) drug therapy
Z79 questions
What does Z79 mean?
Z79 is the ICD-10-CM code for Long term (current) drug therapy. It is in chapter 22, Factors influencing health status and contact with health services (Z00-Z99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.