D66
BillableHereditary factor VIII deficiency
D66 is the ICD-10-CM code for Hereditary factor VIII deficiency. It is a billable, specific code valid for reimbursement.
- Status
- Billable
- Chapter
- D50-D89
- Edition
- FY2026
D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Includes
- •Classical hemophilia
- •Deficiency factor VIII (with functional defect)
- •Hemophilia NOS
- •Hemophilia A
Excludes1 — not coded here
- •factor VIII deficiency with vascular defect (D68.0-)
Frequently asked questions
- What is ICD-10 code D66?
- D66 is the ICD-10-CM code for "Hereditary factor VIII deficiency". It falls under D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
- Is D66 a billable code?
- Yes — D66 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from D66?
- Excludes1 (not coded here): factor VIII deficiency with vascular defect (D68.0-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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