ICD-10-CM category
Z79: Long term (current) drug therapy
Codes under Z79 (Long term (current) drug therapy). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Z79.0 | Long term (current) use of anticoagulants and antithrombotics/antiplatelets | — |
| Z79.0 | Long term (current) use of anticoagulants and antithrombotics/antiplatelets | — |
| Z79.01 | Long term (current) use of anticoagulants | ✓ |
| Z79.01 | Long term (current) use of anticoagulants | ✓ |
| Z79.1 | Long term (current) use of non-steroidal anti-inflammatories (NSAID) | ✓ |
| Z79.1 | Long term (current) use of non-steroidal anti-inflammatories (NSAID) | ✓ |
| Z79.02 | Long term (current) use of antithrombotics/antiplatelets | ✓ |
| Z79.02 | Long term (current) use of antithrombotics/antiplatelets | ✓ |
| Z79.2 | Long term (current) use of antibiotics | ✓ |
| Z79.2 | Long term (current) use of antibiotics | ✓ |
| Z79.3 | Long term (current) use of hormonal contraceptives | ✓ |
| Z79.3 | Long term (current) use of hormonal contraceptives | ✓ |
| Z79.4 | Long term (current) use of insulin | ✓ |
| Z79.4 | Long term (current) use of insulin | ✓ |
| Z79.5 | Long term (current) use of steroids | — |
| Z79.5 | Long term (current) use of steroids | — |
| Z79.6 | Long term (current) use of immunomodulators and immunosuppressants | — |
| Z79.6 | Long term (current) use of immunomodulators and immunosuppressants | — |
| Z79.8 | Other long term (current) drug therapy | — |
| Z79.8 | Other long term (current) drug therapy | — |
| Z79.51 | Long term (current) use of inhaled steroids | ✓ |
| Z79.51 | Long term (current) use of inhaled steroids | ✓ |
| Z79.52 | Long term (current) use of systemic steroids | ✓ |
| Z79.52 | Long term (current) use of systemic steroids | ✓ |
| Z79.60 | Long term (current) use of unspecified immunomodulators and immunosuppressants | ✓ |
| Z79.60 | Long term (current) use of unspecified immunomodulators and immunosuppressants | ✓ |
| Z79.61 | Long term (current) use of immunomodulator | ✓ |
| Z79.61 | Long term (current) use of immunomodulator | ✓ |
| Z79.62 | Long term (current) use of immunosuppressant | — |
| Z79.62 | Long term (current) use of immunosuppressant | — |
| Z79.63 | Long term (current) use of chemotherapeutic agent | — |
| Z79.63 | Long term (current) use of chemotherapeutic agent | — |
| Z79.64 | Long term (current) use of myelosuppressive agent | ✓ |
| Z79.64 | Long term (current) use of myelosuppressive agent | ✓ |
| Z79.69 | Long term (current) use of other immunomodulators and immunosuppressants | ✓ |
| Z79.69 | Long term (current) use of other immunomodulators and immunosuppressants | ✓ |
| Z79.81 | Long term (current) use of agents affecting estrogen receptors and estrogen levels | — |
| Z79.81 | Long term (current) use of agents affecting estrogen receptors and estrogen levels | — |
| Z79.82 | Long term (current) use of aspirin | ✓ |
| Z79.82 | Long term (current) use of aspirin | ✓ |
| Z79.83 | Long term (current) use of bisphosphonates | ✓ |
| Z79.83 | Long term (current) use of bisphosphonates | ✓ |
| Z79.84 | Long term (current) use of oral hypoglycemic drugs | ✓ |
| Z79.84 | Long term (current) use of oral hypoglycemic drugs | ✓ |
| Z79.85 | Long-term (current) use of injectable non-insulin antidiabetic drugs | ✓ |
| Z79.85 | Long-term (current) use of injectable non-insulin antidiabetic drugs | ✓ |
| Z79.89 | Other long term (current) drug therapy | — |
| Z79.89 | Other long term (current) drug therapy | — |
| Z79.620 | Long term (current) use of immunosuppressive biologic | ✓ |
| Z79.620 | Long term (current) use of immunosuppressive biologic | ✓ |
| Z79.621 | Long term (current) use of calcineurin inhibitor | ✓ |
| Z79.621 | Long term (current) use of calcineurin inhibitor | ✓ |
| Z79.622 | Long term (current) use of Janus kinase inhibitor | ✓ |
| Z79.622 | Long term (current) use of Janus kinase inhibitor | ✓ |
| Z79.623 | Long term (current) use of mammalian target of rapamycin (mTOR) inhibitor | ✓ |
| Z79.623 | Long term (current) use of mammalian target of rapamycin (mTOR) inhibitor | ✓ |
| Z79.624 | Long term (current) use of inhibitors of nucleotide synthesis | ✓ |
| Z79.624 | Long term (current) use of inhibitors of nucleotide synthesis | ✓ |
| Z79.630 | Long term (current) use of alkylating agent | ✓ |
| Z79.630 | Long term (current) use of alkylating agent | ✓ |
| Z79.631 | Long term (current) use of antimetabolite agent | ✓ |
| Z79.631 | Long term (current) use of antimetabolite agent | ✓ |
| Z79.632 | Long term (current) use of antitumor antibiotic | ✓ |
| Z79.632 | Long term (current) use of antitumor antibiotic | ✓ |
| Z79.633 | Long term (current) use of mitotic inhibitor | ✓ |
| Z79.633 | Long term (current) use of mitotic inhibitor | ✓ |
| Z79.634 | Long term (current) use of topoisomerase inhibitor | ✓ |
| Z79.634 | Long term (current) use of topoisomerase inhibitor | ✓ |
| Z79.810 | Long term (current) use of selective estrogen receptor modulators (SERMs) | ✓ |
| Z79.810 | Long term (current) use of selective estrogen receptor modulators (SERMs) | ✓ |
| Z79.811 | Long term (current) use of aromatase inhibitors | ✓ |
| Z79.811 | Long term (current) use of aromatase inhibitors | ✓ |
| Z79.818 | Long term (current) use of other agents affecting estrogen receptors and estrogen levels | ✓ |
| Z79.818 | Long term (current) use of other agents affecting estrogen receptors and estrogen levels | ✓ |
| Z79.890 | Hormone replacement therapy | ✓ |
| Z79.890 | Hormone replacement therapy | ✓ |
| Z79.891 | Long term (current) use of opiate analgesic | ✓ |
| Z79.891 | Long term (current) use of opiate analgesic | ✓ |
| Z79.899 | Other long term (current) drug therapy | ✓ |
| Z79.899 | Other long term (current) drug therapy | ✓ |
Frequently asked questions
What is ICD-10-CM code Z79?
Z79 is an ICD-10-CM category covering Long term (current) drug therapy. It contains 80 more specific diagnosis codes, 64 of which are billable.
Is Z79 a billable code?
No — Z79 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example Z79.0 — Long term (current) use of anticoagulants and antithrombotics/antiplatelets). 64 of the 80 codes under Z79 are billable.
What codes fall under Z79?
Z79 includes Z79.0, Z79.0, Z79.01, Z79.01, Z79.1, plus 75 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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