Non-specific code 2014 ICD-9-CM Diagnosis Code 299.9
Unspecified pervasive developmental disorder
  • Non-Billable Code
  • 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.
Clinical Information
  • A category of developmental disorders characterized by impaired communication and socialization skills. The impairments are incongruent with the individual's developmental level or mental age. These disorders can be associated with general medical or genetic conditions.
  • 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.
299.9 Excludes
  • schizophrenia of adult type occurring in childhood (295.0-295.9)
Applies To
  • Child psychosis NOS
  • Pervasive developmental disorder NOS
  • Schizophrenia, childhood type NOS
  • Schizophrenic syndrome of childhood NOS
ICD-9-CM Volume 2 Index entries containing back-references to 299.9:
  • Disorder - see also Disease
    • pervasive developmental 299.9
  • Psychosis 298.9
    • childhood, with origin specific to 299.9
    • schizophrenia, schizophrenic (see also Schizophrenia) 295.9
      • borderline type 295.5
        • of childhood (see also Psychosis, childhood) 299.8
      • catatonic (excited) (withdrawn) 295.2
      • childhood type (see also Psychosis, childhood) 299.9
      • hebephrenic 295.1
      • incipient 295.5
      • latent 295.5
      • paranoid 295.3
      • prepsychotic 295.5
      • prodromal 295.5
      • pseudoneurotic 295.5
      • pseudopsychopathic 295.5
      • schizophreniform 295.4
      • simple 295.0
      • undifferentiated type 295.9
  • Schizophrenia, schizophrenic (reaction) 295.9
    • childhood (type) (see also Psychosis, childhood) 299.9
    • syndrome of childhood NEC (see also Psychosis, childhood) 299.9
  • Syndrome - see also Disease
    • schizophrenic, of childhood NEC (see also Psychosis, childhood) 299.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 299.9 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 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.