Z79.6

ICD-10Non-billable category

Long term (crnt) use of immunomodulator & immunosuppressant

Official ICD-10-CM descriptor (FY2026)

Long term (current) use of immunomodulators and immunosuppressants

Z79.6 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Excludes2

Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

long term (current) use of steroids (Z79.5-)
long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-)

ICD-10-CM FY2026 defines 6 codes beneath Z79.6. See the ICD-10-CM index for what this site publishes.

Related codes in Z79

Where this code sits

Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Parent code: Z79

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.