Other conditions due to autosomal anomalies

This code represents various congenital disorders resulting from abnormalities in the number or structure of autosomes, excluding those specifically classified elsewhere. These anomalies can lead to a wide range of developmental delays, physical malformations, and functional impairments affecting multiple organ systems.

Apply this code when documentation indicates a diagnosis of an autosomal anomaly that doesn't have a more specific ICD-9-CM code. This includes conditions like partial trisomies, partial monosomies, or complex autosomal rearrangements not covered by codes for Down syndrome, Patau syndrome, or Edwards syndrome. The physician's diagnosis must clearly state an autosomal anomaly as the underlying cause of the patient's condition.

• Ensure the documentation explicitly states an autosomal anomaly and not a sex chromosome anomaly or a genetic disorder without a chromosomal basis.
• Avoid using this code if a more specific ICD-9-CM code exists for the diagnosed autosomal anomaly (e.g., Trisomy 21).
• Always sequence this code as the primary diagnosis when it is the definitive cause of the patient's presenting symptoms or conditions.