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Start free with EleplanBleeding disorder in hemophilia B carriers
ORPHA:177929Clinical subtype
What it is
A rare bleeding disorder in association with carrier mutations in the F9 gene (Xq27.1) encoding coagulation factor IX (FIX), with a biological activity of FIX ≥40 IU/dL and characterized clinically by abnormal bleeding as a result of minor injuries or following trauma, surgery or tooth extraction. Spontaneous hemorrhages may occur occasionally. Heavy menstrual bleeding is the most frequent type of bleed in the carriers.
Key facts
- Inheritance
- X-linked recessive
- Classified as
- Clinical subtype
Recorded for the broader condition
- Prevalence
- 1-9 / 100 000 (Europe)Hemophilia B
- Age of onset
- Childhood, Infancy, NeonatalHemophilia B
Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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