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ICD-10-CM 2027 diagnosis code

D84.82Immunodeficiency due to drugs and external causes

Not billable — use a more specific code

D84.82 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code last changed in FY2021 (effective October 1, 2020). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About D84.82

D84.82 is the ICD-10-CM diagnosis code for immunodeficiency due to drugs and external causes. It belongs to category D84 (other immunodeficiencies), block D80-D89 (certain disorders involving the immune mechanism) and chapter 3 (diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within D84.8 (other specified immunodeficiencies), D84.82 is specifically for immunodeficiency due to drugs and external causes. Related codes cover immunodeficiency due to conditions classified elsewhere (D84.81) and other immunodeficiencies (D84.89).

To report this condition, pick the subcode that matches the documentation: D84.821 (drugs) and D84.822 (causes).

It was added in FY2021, effective October 1, 2020.

Specific codes under D84.82

Notes that apply from higher levels

Instructions written at a parent level also apply to D84.82.

Broader instructions also apply from D80-D89 Certain disorders involving the immune mechanism and Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.

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
  • FY2021 (effective 10/1/2020): Added
  • No changes since FY2021.

Common questions about D84.82

Is D84.82 billable?

No. D84.82 is a header code. Report one of its more specific subcodes instead.