2023 ICD-10-CM Diagnosis Code F84.9

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Pervasive developmental disorder, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • F84.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM F84.9 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of F84.9 - other international versions of ICD-10 F84.9 may differ.
Applicable To
  • Atypical autism
The following code(s) above F84.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to F84.9:
  • F01-F99
    2023 ICD-10-CM Range F01-F99

    Mental, Behavioral and Neurodevelopmental disorders

    • disorders of psychological development
    Type 2 Excludes
    • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
    Mental, Behavioral and Neurodevelopmental disorders
  • F84
    ICD-10-CM Diagnosis Code F84

    Pervasive developmental disorders

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Code Also
    • any associated medical condition and intellectual disabilities
    Pervasive developmental disorders
Approximate Synonyms
  • Developmental disorder, pervasive
  • Developmental disorder, pervasive, residual state
  • Pervasive developmental disorder
  • Pervasive developmental disorder of residual state
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.
ICD-10-CM F84.9 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 885 Psychoses

Convert F84.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
Code annotations containing back-references to F84.9:
  • Code Also: F78.A1
    ICD-10-CM Diagnosis Code F78.A1

    SYNGAP1-related intellectual disability

      2022 - New Code 2023 Billable/Specific Code
    Code Also
    • , if applicable, any associated:
    • autism spectrum disorder (F84.0)
    • autistic disorder (F84.0)
    • encephalopathy (G93.4-)
    • epilepsy and recurrent seizures (G40.-)
    • other pervasive developmental disorders (F84.8)
    • pervasive developmental disorder, NOS (F84.9)

Diagnosis Index entries containing back-references to F84.9:
  • Autism, autistic (childhood) (infantile) F84.0
    ICD-10-CM Diagnosis Code F84.0

    Autistic disorder

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Applicable To
    • Autism spectrum disorder
    • Infantile autism
    • Infantile psychosis
    • Kanner's syndrome
    Type 1 Excludes
    • Asperger's syndrome (F84.5)
    • atypical F84.9
  • Delay, delayed
    • development R62.50
      ICD-10-CM Diagnosis Code R62.50

      Unspecified lack of expected normal physiological development in childhood

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      Applicable To
      • Infantilism NOS
      • pervasive F84.9
  • Disability, disabilities
    • intellectual F79
      ICD-10-CM Diagnosis Code F79

      Unspecified intellectual disabilities

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      Applicable To
      • Mental deficiency NOS
      • Mental subnormality NOS
      • with
        • autistic features F84.9
  • Disorder (of) - see also Disease
    • developmental F89
      ICD-10-CM Diagnosis Code F89

      Unspecified disorder of psychological development

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      Applicable To
      • Developmental disorder NOS
      • Neurodevelopmental disorder NOS
    • pervasive, developmental F84.9

ICD-10-CM Codes Adjacent To F84.9
F81.81 Disorder of written expression
F81.89 Other developmental disorders of scholastic skills
F81.9 Developmental disorder of scholastic skills, unspecified
F82 Specific developmental disorder of motor function
F84 Pervasive developmental disorders
F84.0 Autistic disorder
F84.2 Rett's syndrome
F84.3 Other childhood disintegrative disorder
F84.5 Asperger's syndrome
F84.8 Other pervasive developmental disorders
F84.9 Pervasive developmental disorder, unspecified
F88 Other disorders of psychological development
F89 Unspecified disorder of psychological development
F90 Attention-deficit hyperactivity disorders
F90.0 Attention-deficit hyperactivity disorder, predominantly inattentive type
F90.1 Attention-deficit hyperactivity disorder, predominantly hyperactive type
F90.2 Attention-deficit hyperactivity disorder, combined type
F90.8 Attention-deficit hyperactivity disorder, other type
F90.9 Attention-deficit hyperactivity disorder, unspecified type
F91 Conduct disorders
F91.0 Conduct disorder confined to family context

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.