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ICD-10-CM Current in FY 2027

D89.834

Cytokine release syndrome, grade 4

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where D89.834 sits in the official hierarchy. Each level is the code it is classified under.

  1. D89 Other disorders involving the immune mechanism, not elsewhere classified
  2. D89.8 Other specified disorders involving the immune mechanism, not elsewhere classified
  3. D89.83 Parent Cytokine release syndrome
  4. D89.834 This code Cytokine release syndrome, grade 4

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Excludes1

hyperglobulinemia NOS ( R77.1 )

Inherited from D89 — Other disorders involving the immune mechanism, not elsewhere classified

Excludes1

monoclonal gammopathy (of undetermined significance) ( D47.2 )

Inherited from D89 — Other disorders involving the immune mechanism, not elsewhere classified

Excludes2

transplant failure and rejection ( T86 .-)

Inherited from D89 — Other disorders involving the immune mechanism, not elsewhere classified

Code First

underlying cause, such as:

Inherited from D89.83 — Cytokine release syndrome

Code First

complications following infusion, transfusion and therapeutic injection ( T80.89- )

Inherited from D89.83 — Cytokine release syndrome

Code First

complications of transplanted organs and tissue ( T86 .-)

Inherited from D89.83 — Cytokine release syndrome

Use Additional Code

code for adverse effect, if applicable, to identify immune checkpoint inhibitors and immunostimulant drugs ( T45.AX5 )

Inherited from D89.83 — Cytokine release syndrome

Use Additional Code

code to identify associated manifestations

Inherited from D89.83 — Cytokine release syndrome

Version History

How D89.834 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Cytokine release syndrome, grade 4

  2. FY 2026 Effective

    Unchanged

    Cytokine release syndrome, grade 4

Related Codes

Other codes under D89.83

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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