D84.8 – Other specified immunodeficiencies
ICD-10-CM 2027 diagnosis code · Certain disorders involving the immune mechanism
ICD-10-CM code
D84.8
- Code
D84.8(claims format:D848)- Description
- Other specified immunodeficiencies
- Billable
- No – use a more specific code below
- 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
- D84
Billable codes under D84.8
D84.8 is a header code and cannot be used on claims. Choose the most specific code:
- D84.81 – Immunodeficiency due to conditions classified elsewhereBillable
- D84.82 – Immunodeficiency due to drugs and external causesHeader (more codes below)
- D84.89 – Other immunodeficienciesBillable
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)
Related codes in D84
Frequently asked questions
What is ICD-10 code D84.8?
D84.8 is the ICD-10-CM code for other specified immunodeficiencies, in the block D80-D89 (Certain disorders involving the immune mechanism).
Is D84.8 a billable code?
No. D84.8 is a header code with more specific child codes; report one of the billable codes listed above.
What category does D84.8 belong to?
It belongs to category D84 – Other immunodeficiencies.
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.