AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2025 Issue 4; New/Revised ICD-10-CM Codes
Hao-Fountain Syndrome
Code Q87.87, Hao-Fountain Syndrome, has been created at subcategory Q87.8, Other specified congenital malformations syndromes, not elsewhere classified, to specifically identify Hao-Fountain syndrome.Hao-Fountain syndrome (HAFOUS) is a rare neurodevelopmental disorder caused by a mutation of the USP7 (ubiquitin-specific protease 7) gene on chromosome 16p13.2. Its prevalence is estimated to be 1 in 40,000. Most people with this syndrome, after onset in infancy or childhood, usually have dysmorphic facial features, global developmental delay, intellectual disability, impaired motor skills, speech delay, and behavioral abnormalities, such as autism spectrum disorder. Some patients with this disorder develop seizures...
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Article Overview
This article covers Hao-Fountain syndrome, a rare neurodevelopmental disorder, and notes the creation of an ICD-10-CM diagnosis code for it within a congenital malformation syndromes category. It is relevant to coders, billers, clinical documentation staff, and genetics or neurology-focused practices that need to recognize the condition and understand the general context for its classification. The content provides a brief overview of the disorder’s cause, frequency, and common developmental and neurologic features without giving detailed coding procedures.
Why This Topic Matters
It helps readers identify that a specific ICD-10-CM code now exists for this rare syndrome and understand the broad clinical context behind the code.
What You Will Learn
- Why a specific diagnosis code was created for Hao-Fountain syndrome
- How the article situates the condition within a broader congenital malformations category
- The general clinical characteristics associated with the syndrome
- Why the topic is relevant to diagnosis documentation and medical coding
Who Should Read This
- Medical coders
- Clinical documentation specialists
- Billers
- Genetics specialists
- Neurology practices
- Health information management professionals
Codes Discussed
Code Ranges Discussed
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