ICD-10-CM Alphabetic Index · FY 2026 47 Entries
Immunodeficiency in the ICD-10-CM Index ICD-10-CM
The main term Immunodeficiency carries 47 index entries pointing to 33 ICD-10-CM codes. The default entry is D84.9, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
47
Index Entries
33
Codes Referenced
D84.9
Default Code
I
Letter
47 of 47 shown
ICD-10-CM
Index Entries Under Immunodeficiency 47 entries · 33 codes
Immunodeficiency D84.9
with
adenosine-deaminase deficiency D81.30 see also Deficiency, adenosine deaminase
antibody defects D80.9
specified type NEC D80.8
hyperimmunoglobulinemia D80.6
increased immunoglobulin M (IgM) D80.5
major defect D82.9
specified type NEC D82.8
partial albinism D82.8
short-limbed stature D82.2
thrombocytopenia and eczema D82.0
antibody with
hyperimmunoglobulinemia D80.6
near-normal immunoglobulins D80.6
autosomal recessive, Swiss type D80.0
combined D81.9
biotin-dependent carboxylase D81.819
biotinidase D81.810
holocarboxylase synthetase D81.818
specified type NEC D81.818
severe (SCID) D81.9
with
low or normal B-cell numbers D81.2
low T- and B-cell numbers D81.1
reticular dysgenesis D81.0
specified type NEC D81.89
common variable D83.9
with
abnormalities of B-cell numbers and function D83.0
autoantibodies to B- or T-cells D83.2
immunoregulatory T-cell disorders D83.1
specified type NEC D83.8
due to
conditions classified elsewhere D84.81
drugs D84.821
external causes D84.822
medication (current or past) D84.821
following hereditary defective response to Epstein-Barr virus (EBV) D82.3
selective, immunoglobulin
A (IgA) D80.2
G (IgG) (subclasses) D80.3
M (IgM) D80.4
severe combined (SCID) D81.9
due to adenosine deaminase deficiency D81.31
specified type NEC D84.89
X-linked, with increased IgM D80.5
The info icon previews the code's description and billable status; the code link opens its full page with all notations.
Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
