Home > 2009 ICD-9-CM Diagnosis Codes > Mental Disorders 290-319 > Mental Retardation 317-319 > Unspecified mental retardation 319-
Specific code 2009 ICD-9-CM Diagnosis Code 319
Unspecified mental retardation
  • Short description: MENTAL RETARDATION NOS.
  • ICD-9-CM 319 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 319 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
  • You are viewing the 2009 version of ICD-9-CM 319.
  • More recent version(s) of ICD-9-CM 319: 2010 2011 2012 2013 2014 2015.
Convert to ICD-10-CM: 319 converts approximately to:
  • 2015/16 ICD-10-CM F79 Unspecified intellectual disabilities
Approximate Synonyms
  • Intellectual disability
  • Intellectual functioning disability
  • Mental Retardation
Applies To
  • Mental deficiency NOS
  • Mental subnormality NOS
ICD-9-CM Volume 2 Index entries containing back-references to 319:
  • Amentia (see also Retardation, mental) 319
  • Brain - see also condition
    • syndrome (acute) (chronic) (nonpsychotic) (organic) (with neurotic reaction) (with behavioral reaction) (see also Syndrome, brain) 310.9
      • with
        • presenile brain disease 290.10
        • psychosis, psychotic reaction (see also Psychosis, organic) 294.9
      • congenital (see also Retardation, mental) 319
  • Defect, defective 759.9
    • mental (see also Retardation, mental) 319
  • Deficiency, deficient
    • mental (familial) (hereditary) (see also Retardation, mental) 319
  • Dementia 294.8
    • congenital (see also Retardation, mental) 319
  • Development
    • tardy, mental (see also Retardation, mental) 319
  • Inadequate, inadequacy
    • mental (see also Retardation, mental) 319
  • Insufficiency, insufficient
    • mental (congenital) (see also Retardation, mental) 319
  • Mental - see also condition
    • deficiency (see also Retardation, mental) 319
    • insufficiency (congenital) (see also Retardation, mental) 319
    • retardation (see also Retardation, mental) 319
    • subnormality (see also Retardation, mental) 319
  • Oligergasia (see also Retardation, mental) 319
  • Oligophrenia (see also Retardation, mental) 319
  • Retardation
  • Subnormal, subnormality
  • Syndrome - see also Disease
    • brain (acute) (chronic) (nonpsychotic) (organic) (with behavioral reaction) (with neurotic reaction) 310.9
      • with
        • presenile brain disease (see also Dementia, presenile) 290.10
        • psychosis, psychotic reaction (see also Psychosis, organic) 294.9
      • chronic alcoholic 291.2
      • congenital (see also Retardation, mental) 319
      • postcontusional 310.2
      • posttraumatic
      • psycho-organic (see also Syndrome, psycho-organic) 310.9
      • psychotic (see also Psychosis, organic) 294.9
      • senile (see also Dementia, senile) 290.0
 318.2 ICD9Data.com 320 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 319 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 2009 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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