D662026
Billable
Hereditary factor VIII deficiency
D66 is a billable ICD-10-CM diagnosis code for Hereditary factor VIII deficiency, effective for the FY2026 code set.
Clinical Notes
Frequently Asked Questions
Code Hierarchy
D66
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Related MS-DRGs1
Diagnosis Related Groups for inpatient billing
Official Guidelines
Chapter 3: Blood and Immune Disorders
Official coding guidelines for D50-D89