D89.8
⚠ Non-billable (Header)Other specified disorders involving the immune mechanism, not elsewhere classified
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inherited from D89Rules from parent category D89: Other disorders involving the immune mechanism, not elsewhere classified
- • hyperglobulinemia NOS (R77.1)
- • monoclonal gammopathy (of undetermined significance) (D47.2)
⚠️ Excludes2
inherited from D89Rules from parent category D89: Other disorders involving the immune mechanism, not elsewhere classified
- • transplant failure and rejection (T86.-)
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CodeD89.8
BillableNo — Header code
ParentD89
CategoryDiseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Excludes12 rule(s)
Excludes21 note(s)
Child codes5
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)