AHA Coding Clinic® for ICD-9 - 2004 Issue 4; VOLUMES 1 AND 2 NEW/REVISED DIAGNOSIS CODES

Autosomal Deletion Syndromes

The study of the human genome has allowed the identification of many chromosomal disorders. Deletions of certain portions of a chromosome may result in very serious defects such as mental retardation and multiple congenital anomalies. Effective October 1, 2004, code 758.3, Autosomal deletion syndromes, has been expanded to allow unique codes for specific types of autosomal deletion syndromes. Cri-du-chat syndrome (758.31): This syndrome is due to a deletion on the short arm of the fifth chromosome (5p-). Affected individuals have a high-pitched cry, like a kitten. Associated findings can include mental retardation, microcephaly, dysmorphic features, inguinal hernia...

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