Mixed development disorder

This code describes a condition where a child exhibits significant delays in multiple areas of development, such as motor skills, language, and social-emotional functioning, but does not meet the full diagnostic criteria for a more specific pervasive developmental disorder or intellectual disability. The developmental profile is uneven, with some areas more affected than others.

Use this code when documentation indicates a child has global developmental delays that are not fully explained by a specific diagnosis like autism spectrum disorder or intellectual disability. It is appropriate for cases where the developmental difficulties are broad but do not fit neatly into other diagnostic categories. Supporting documentation should detail the specific areas of developmental delay observed.

• Ensure documentation clearly specifies delays across multiple developmental domains.
• Differentiate from more specific pervasive developmental disorders (e.g., autism) or intellectual disabilities, which have their own distinct codes.
• Consider using additional codes to specify particular symptoms or co-occurring conditions if documented.