Hereditary factor VIII deficiency (D66) ICD-10-CM
The D66 code range covers hereditary factor viii deficiency with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Classical hemophilia
- Deficiency factor VIII (with functional defect)
- Hemophilia NOS
- Hemophilia A
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- factor VIII deficiency with vascular defect D68.0
Codes in the D66 Range 1 codes · 1 billable
- D66 Hereditary factor VIII deficiency
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the D66 range.
Hemophilia A
The classic hemophilia resulting from a deficiency of factor VIII. It is an inherited disorder of blood coagulation characterized by a permanent tendency to hemorrhage.
About the D66 Code Range
Hemophilia A is an inherited deficiency of factor VIII that affects blood clotting and causes a lasting tendency to bleed. D66 identifies this condition within the group of clotting defects and other bleeding conditions.
Questions About This Page
How many billable codes are in the D66 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the D66 range classify?
The range classifies hereditary factor viii deficiency. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
