AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2018 Issue 4; New/Revised ICD-10-CM Codes
Angelman Syndrome
Subcategory Q93, Monosomies and deletions from the autosomes, not elsewhere classified, was expanded and new codes were created to specifically identify Angelman Syndrome (Q93.51) and other deletions of part of a chromosome (Q93.59). Angelman Syndrome (AS) is a genetic neurodevelopmental disorder characterized by cognitive disability, motor dysfunction, speech impairment, hyperactivity, seizures, excessive laughing, decreased sleeping and gastroesophageal reflux. AS generally results from deletion, mutation or silencing of the gene for ubiquitin-protein ligase E3A (UBE3A). Deletions usually start and end at common breakpoints. Certain symptoms are associated with deletions involving particular regions, such as epilepsy. Some cases with...
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Article Overview
This article covers an ICD-10-CM subcategory update tied to Angelman syndrome and related chromosome deletions. It provides a general clinical overview of the disorder, notes its genetic basis and common features, and explains the administrative and research context behind the new code creation. It is relevant to coders, compliance staff, genetic and neurology specialists, and analysts tracking condition-specific reporting.
Why This Topic Matters
The article helps readers understand a diagnosis coding update for a rare genetic neurodevelopmental disorder and why the change supports more specific tracking for clinical and research uses.
What You Will Learn
- How Angelman syndrome is situated within an ICD-10-CM subcategory update
- The broad clinical and genetic background of Angelman syndrome
- Why a more specific diagnosis code was introduced
- The epidemiologic significance of the condition for tracking and reporting
Who Should Read This
- Medical coders
- Coding auditors
- Compliance professionals
- Genetic counselors
- Neurology clinicians
- Health information management professionals
- Clinical researchers
Codes Discussed
Code Ranges Discussed
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