Non-specific code 2015 ICD-9-CM Diagnosis Code 299.0
Autistic disorder
  • 2015
  • Non-Billable Code

  • 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.
Clinical Information
  • 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
299.0 Excludes
  • disintegrative psychosis (299.1)
  • Heller's syndrome (299.1)
  • schizophrenic syndrome of childhood (299.9)
Applies To
  • Childhood autism
  • Infantile psychosis
  • Kanner's syndrome
ICD-9-CM Volume 2 Index entries containing back-references to 299.0:
  • Autism, autistic (child) (infantile) 299.0
  • Dementia 294.20
    • infantile, infantilia (see also Psychosis, childhood) 299.0
  • Disorder - see also Disease
    • autistic 299.0
    • semantic pragmatic 315.39
      • with autism 299.0
  • Kanner's syndrome (autism) (see also Psychosis, childhood) 299.0
  • Psychosis 298.9
    • infantile (see also Psychosis, childhood) 299.0
  • Syndrome - see also Disease
    • Kanner's (autism) (see also Psychosis, childhood) 299.0
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.