AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2019 Issue 4; New/Revised ICD-10-CM Codes

Prader-Willi Syndrome

Prader-Willi syndrome (PWS) is a complex neurodevelopmental disorder that affects many parts of the body. It is caused by lack of expression of genes in the paternally inherited chromosome 15q11.2-q13. During infancy, PWS is characterized by hypotonia, feeding difficulties, poor growth, and delayed development. Beginning in childhood, affected individuals develop an insatiable appetite, which leads to chronic overeating (hyperphagia) and obesity. PWS is the most common genetic syndrome causing obesity. Some people with PWS, particularly those with obesity, also develop type 2 diabetes. There is typically mild to moderate intellectual impairment and learning disabilities in people with PWS...

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