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ICD-10-CM 2027 diagnosis code

Z79.62Long term (current) use of immunosuppressant

Not billable — use a more specific code

Z79.62 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.

Code last changed in FY2023 (effective October 1, 2022). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z79.62

Z79.62 is the ICD-10-CM diagnosis code for long term (current) use of immunosuppressant. It belongs to category Z79 (long term (current) drug therapy), block Z77-Z99 (persons with potential health hazards related to family and personal history and certain conditions influencing health status) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within Z79.6 (long term (current) use of immunomodulators and immunosuppressants), Z79.62 is specifically for long term (current) use of immunosuppressant. Related codes cover unspecified immunomodulators and immunosuppressants (Z79.60), immunomodulator (Z79.61), chemotherapeutic agent (Z79.63), myelosuppressive agent (Z79.64) and other immunomodulators and immunosuppressants (Z79.69).

To report this condition, pick the subcode that matches the documentation: Z79.620 (biologic), Z79.621 (inhibitor), Z79.622 (inhibitor), Z79.623 (inhibitor) and Z79.624 (synthesis).

It was added in FY2023, effective October 1, 2022.

Specific codes under Z79.62

Notes that apply from higher levels

Instructions written at a parent level also apply to Z79.62.

› From Z79.6 Long term (current) use of immunomodulators and immunosuppressants
Excludes2
  • long term (current) use of steroids (Z79.5-)
  • long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-)
› From Z79 Long term (current) drug therapy
Includes
  • long term (current) drug use for prophylactic purposes
Excludes2
  • 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)

Broader instructions also apply from Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status and Chapter 21: Factors influencing health status and contact with health services.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2023 (effective 10/1/2022): Added
  • No changes since FY2023.

Common questions about Z79.62

Is Z79.62 billable?

No. Z79.62 is a header code. Report one of its more specific subcodes instead.