D83.9Billable

Common variable immunodeficiency, unspecified

Chapter
3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Category
D83
Effective date
October 1, 2026

Related codes in category D83

D83Common variable immunodeficiencyD83.0Com variab immunodef w predom abnlt of B-cell nums & functnYesD83.1Com variab immunodef w predom immunoreg T-cell disordersYesD83.2Common variable immunodef w autoantibodies to B- or T-cellsYesD83.8Other common variable immunodeficienciesYes

Frequently asked questions

What is ICD-10 code D83.9?

D83.9 is an ICD-10-CM diagnosis code for Common variable immunodeficiency, unspecified.

Is D83.9 a billable code?

Yes. D83.9 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is D83.9 in?

D83.9 falls under Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.

When did D83.9 become effective?

D83.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to D83.9?

D83.9 belongs to category D83, which includes 5 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.