D81.9
BillableCombined immunodeficiency, unspecified
D81.9 is the ICD-10-CM code for Combined immunodeficiency, unspecified. It is a billable, specific code valid for reimbursement.
D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Includes
- •Severe combined immunodeficiency disorder [SCID] NOS
Frequently asked questions
- What is ICD-10 code D81.9?
- D81.9 is the ICD-10-CM code for "Combined immunodeficiency, unspecified". It falls under D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
- Is D81.9 a billable code?
- Yes — D81.9 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition