MCMCB Pro
D89.832

D89.832Cytokine release syndrome, grade 2

Billable / specific codeICD-10-CM

D89.832 is a billable, specific ICD-10-CM code for cytokine release syndrome, grade 2. It is valid for submission on a claim.

Risk adjustment

D89.832 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

D89.832 is named in 5 Medicare coverage policies 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A55717Billing and Coding: Lab: Flow Cytometry
  • A56464Billing and Coding: Flow Cytometry
  • A56718Billing and Coding: Intravenous Immunoglobulin (IVIG)
  • A57689Billing and Coding: Lab: Flow Cytometry

How D89.832 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to D89.832.

  • Syndromecytokine releasegrade 2

Related codes at this level

Codes that share D89.83. If D89.832 is not quite right, the correct code is usually one of these.

Questions about D89.832

Is D89.832 a billable ICD-10-CM code?
Yes. D89.832 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D89.832 sit in the tabular list?
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89), in the block Certain disorders involving the immune mechanism (D80-D89).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.