Down syndrome, unspecified

This code identifies a congenital chromosomal disorder resulting from an extra copy of chromosome 21, characterized by a combination of intellectual disability, distinctive facial features, and often other health problems such as heart defects or gastrointestinal abnormalities. It represents the general diagnosis of Down syndrome without further specification of associated conditions or specific chromosomal aberrations.

This code is appropriate when the medical record clearly documents a diagnosis of Down syndrome, but no specific details regarding the type (e.g., Trisomy 21, translocation, mosaicism) or associated complications are provided. It should be used when the provider's documentation simply states "Down syndrome" without further elaboration.

• Avoid using this code if more specific documentation is available regarding the type of Down syndrome or associated conditions; instead, use a more precise code from the Q90 series.
• Always code any associated congenital anomalies or medical conditions (e.g., congenital heart defects, hypothyroidism) separately in addition to this code.
• Review the entire medical record for any mention of specific chromosomal findings or clinical manifestations that would allow for a more detailed and accurate code assignment.