D83.9 – Common variable immunodeficiency, unspecified
ICD-10-CM 2027 diagnosis code · Certain disorders involving the immune mechanism
ICD-10-CM code
D83.9
- Code
D83.9(claims format:D839)- Description
- Common variable immunodeficiency, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
- Block
- D80-D89 Certain disorders involving the immune mechanism
- Parent codes
- D83
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block D80-D89
Includes:
- defects in the complement system
- immunodeficiency disorders, except human immunodeficiency virus [HIV] disease
- sarcoidosis
Excludes1 (not coded here):
Excludes2 (not included here):
- human immunodeficiency virus [HIV] disease (B20)
Index terms for D83.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in D83
- D83.0 – Common variable immunodeficiency with predominant abnormalities of B-cell numbers and functionBillable
- D83.1 – Common variable immunodeficiency with predominant immunoregulatory T-cell disordersBillable
- D83.2 – Common variable immunodeficiency with autoantibodies to B- or T-cellsBillable
- D83.8 – Other common variable immunodeficienciesBillable
Frequently asked questions
What is ICD-10 code D83.9?
D83.9 is the ICD-10-CM code for common variable immunodeficiency, unspecified, in the block D80-D89 (Certain disorders involving the immune mechanism).
Is D83.9 a billable code?
Yes. D83.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does D83.9 belong to?
It belongs to category D83 – Common variable immunodeficiency.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.