D83.1 Common variable immunodeficiency with predominant immunoregulatory T-cell disorders

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Risk adjustment (HCC)

• CMS-HCC V28: HCC 114 — Common Variable and Combined Immunodeficiencies
• CMS-HCC V22: HCC 47 — Disorders of Immunity
• RxHCC V08: HCC 99 — Immune Disorders
• ESRD V24: HCC 47

MS-DRG index

Defines the logic of DRG(s) 814-816 in MDC 16.

Approximate ICD-9-CM (GEMs)

• 279.06 Common variable immunodeficiency (approximate)

Code annotations containing back-references to D83.1

Back-references to D83

• Type 1 Excludes: D72 Other disorders of white blood cells ("immunity disorders (D80-D89)")
• Type 1 Excludes: D84.81 Immunodeficiency due to conditions classified elsewhere ("certain disorders involving the immune mechanism (D80-D83, D84.0, D84.1, D84.9)")

Diagnosis Index entries for D83.1

• Immunodeficiency › common variable › with › immunoregulatory T-cell disorders

Nearby codes

• D83 Common variable immunodeficiency
• D83.0 Common variable immunodeficiency with predominant abnormalities of B-cell numbers and function
• D83.1 Common variable immunodeficiency with predominant immunoregulatory T-cell disorders (this code)
• D83.2 Common variable immunodeficiency with autoantibodies to B- or T-cells
• D83.8 Other common variable immunodeficiencies
• D83.9 Common variable immunodeficiency, unspecified