2013 ICD-9-CM Diagnosis Code 299.9
Unspecified pervasive developmental disorder
- Broad term for disorders, usually first diagnosed in children prior to age 4, characterized by severe and profound impairment in social interaction, communication, and the presence of stereotyped behaviors, interests, and activities. Compare DEVELOPMENTAL DISABILITIES.
- group of disorders characterized by delays in the development of socialization and communication skills; typical age of onset is before 3 years of age; symptoms may include problems with using and understanding language; difficulty relating to people, objects, and events; unusual play with toys and other objects; difficulty with changes in routine or familiar surroundings, and repetitive body movements or behavior patterns; AUTISM is the most characteristic and best studied PDD; other types of PDD include ASPERGER SYNDROME, Childhood Disintegrative Disorder, and RETT SYNDROME; prefer NTs where possible.
- There are 2 ICD-9-CM codes below 299.9 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
299.9 Excludes 
-Applies To
ICD-9-CM Volume 2 Index entries containing back-references to 299.9:
pervasive developmental 
childhood-onset 
