D81.9 Combined immunodeficiency, unspecified
Billable / valid for submission ICD10CM Release FY2026
Version history
| Release | Valid from | Valid to | Description | Billable |
|---|---|---|---|---|
| FY2026 | 2025-10-01 | current | Combined immunodeficiency, unspecified | yes |
Related codes in D81
- D81 Combined immunodeficiencies
- D81.0 Severe combined immunodeficiency [SCID] with reticular dysgenesis
- D81.1 Severe combined immunodeficiency [SCID] with low T- and B-cell numbers
- D81.2 Severe combined immunodeficiency [SCID] with low or normal B-cell numbers
- D81.3 Adenosine deaminase [ADA] deficiency
- D81.30 Adenosine deaminase deficiency, unspecified
- D81.31 Severe combined immunodeficiency due to adenosine deaminase deficiency
- D81.32 Adenosine deaminase 2 deficiency
- D81.39 Other adenosine deaminase deficiency
- D81.4 Nezelof's syndrome
- D81.5 Purine nucleoside phosphorylase [PNP] deficiency
- D81.6 Major histocompatibility complex class I deficiency
- D81.7 Major histocompatibility complex class II deficiency
- D81.8 Other combined immunodeficiencies
- D81.81 Biotin-dependent carboxylase deficiency
- D81.810 Biotinidase deficiency
- D81.818 Other biotin-dependent carboxylase deficiency
- D81.819 Biotin-dependent carboxylase deficiency, unspecified
- D81.82 Activated Phosphoinositide 3-kinase Delta Syndrome [APDS]
- D81.89 Other combined immunodeficiencies