D81.89
Billable codeOther combined immunodeficiencies
The ICD-10 code for other combined immunodeficiencies is D81.89.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- D81.81Biotin-dependent carboxylase deficiencynon-billable header
- D81.82Activated Phosphoinositide 3-kinase Delta Syndrome [APDS]
- D81.89Other combined immunodeficiencies
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 2792Approximate match
Associated MS-DRGs
D81.89 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 808Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with MCC
- DRG 809Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with CC
- DRG 810Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders without CC/MCC