Z79.62 is the authoritative medical code for Long term current use of immunosuppressant. This classification is used in medical billing and clinical recording to specify the clinical criteria for long term current use of immunosuppressant (ICD-10-CM Z79.62), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Long term current use of immunosuppressant is a non-billable ICD-10-CM category code Z79.62. A more specific billable subcode must be selected for claims submission. Includes: long term current drug use for prophylactic purposes. Excludes2 (not included here): long term current use of steroids Z79.5-; long term current use of agents affecting estrogen receptors and estrogen levels Z79.81-; drug abuse and dependence F11-F19; drug use complicating pregnancy, childbirth, and the puerperium O99.32-. Code also: any therapeutic drug level monitoring Z51.81; any follow-up examination Z08-Z09.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Z79.62 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- long term current drug use for prophylactic purposes
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- long term current use of steroids Z79.5-
- long term current use of agents affecting estrogen receptors and estrogen levels Z79.81-
- drug abuse and dependence F11-F19
- drug use complicating pregnancy, childbirth, and the puerperium O99.32-
Code Also
Additional codes that may be required to fully describe the encounter.
- any therapeutic drug level monitoring Z51.81
- any follow-up examination Z08-Z09
Frequently Asked Questions (FAQ) & Clinical Guidance
Can Z79.62 be billed directly?
No. Z79.62 (Long term current use of immunosuppressant) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Can Z79.62 be reported alongside related conditions?
Per Excludes2 instructions, Z79.62 and the following may both be reported when both are present: long term (current) use of steroids (Z79.5-); long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-); drug abuse and dependence (F11-F19); drug use complicating pregnancy, childbirth, and the puerperium (O99.32-).
Codes in This Family (5)
Official ICD-10-CM classifications in the same code family as Z79.62, with their registry titles.
- Z79.620 — Long term (current) use of immunosuppressive biologic
- Z79.621 — Long term (current) use of calcineurin inhibitor
- Z79.622 — Long term (current) use of Janus kinase inhibitor
- Z79.623 — Long term (current) use of mammalian target of rapamycin (mTOR) inhibitor
- Z79.624 — Long term (current) use of inhibitors of nucleotide synthesis
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: