There are 2 ICD-9-CM codes below 299.0 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
Disorder beginning in childhood marked by the presence of markedly abnormal or impaired development in social interaction and communication and a markedly restricted repertoire of activity and interest; manifestations of the disorder vary greatly depending on the developmental level and chronological age of the individual
Type of autism characterized by very early detection (< 30 months), social coldness, grossly impaired communication, and bizarre motor responses
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 299.0 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.