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D83.9 ICD-10-CA code: Common variable immunodeficiency, unspecified

D83.9 is the ICD-10-CA code for “Common variable immunodeficiency, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

D83.9

Common variable immunodeficiency, unspecified

Short description: Common variable immunodeficiency unspec

ICD-10-CA · Canada · Also written D839

Index terms

Entries in CIHI’s alphabetical index that lead to D83.9. Searching the index by the condition the note names is how coders reach this code.

  • Immunodeficiency, common variable

Notes for D83.9

As CIHI prints them, with any note D83.9 takes from the headings above it.

Includes

Excludes

Conditions classified elsewhere.

  • Autoimmune disease (systemic) NOS (M35.9)functional disorders of polymorphonuclear neutrophils (D71)human immunodeficiency virus [HIV] disease (B24)human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium (O98.7-)From D80-D89 Certain disorders involving the immune mechanism
  • Autoimmune disease (systemic) NOS (M35.9)certain conditions originating in the perinatal period (P00-P96)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)human immunodeficiency virus [HIV] disease (B24)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)

Where D83.9 sits

  1. 1ChapterChapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
  2. 2Block D80-D89Certain disorders involving the immune mechanism
  3. 3Category D83Common variable immunodeficiency
  4. 4Valid code D83.9Common variable immunodeficiency, unspecified

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See D83.9 in the CIHI source

Frequently asked questions

What does ICD-10-CA code D83.9 mean?

D83.9 is the ICD-10-CA code for “Common variable immunodeficiency, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is D83.9 in ICD-10-CA?

D83.9 sits under D83 Common variable immunodeficiency, within D80-D89 Certain disorders involving the immune mechanism, within Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).

What coding notes apply to D83.9?

ICD-10-CA lists Includes, Excludes notes for D83.9, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside D83.9

D83.0Common variable immunodeficiency with predominant abnormalities of B-cell numbers and functionD83.1Common variable immunodeficiency with predominant immunoregulatory T-cell disordersD83.2Common variable immunodeficiency with autoantibodies to B- or T-cellsD83.8Other common variable immunodeficiencies