2026 ICD-10-CM Diagnosis Code F84.0Autistic disorder

ICD-10-CM Codes›F01–F99›F80-F89›F84

ICD-10-CM F84.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F84.0 is a billable ICD-10-CM diagnosis code for autistic disorder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurodevelopmental disorders.

Code Identity

ICD-10-CM Code
F84.0
Billable Status
Yes — Valid for Submission
Code Describes
Autistic disorder
Short Description
Autistic disorder
Same as the full description in the CMS dataset.
Parent Code
F84
Pervasive developmental disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF80-F89Pervasive and specific developmental disorders
CategoryF84Pervasive developmental disorders
This CodeF84.0Autistic disorder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Active infantile autism
  • ADNP-related multiple congenital anomalies, intellectual disability, autism spectrum disorder
  • Autism epilepsy syndrome due to branched chain ketoacid dehydrogenase kinase deficiency
  • Autism spectrum disorder due to AUTS2 deficiency
  • Autism spectrum disorder, epilepsy, arthrogryposis syndrome
  • Autistic disorder of childhood onset
  • Borderline psychosis of childhood
  • Developmental delay with autism spectrum disorder and gait instability
  • GRIN2B-related developmental delay, intellectual disability, autism spectrum disorder
  • High-functioning autism
  • Infantile autism
  • Infantile psychosis
  • Intellectual disability, autism, speech apraxia, craniofacial dysmorphism syndrome
  • Macrocephaly, intellectual disability, autism syndrome
  • Mental disorder in infancy
  • Pervasive developmental disorder of residual state
  • Psychosis in early childhood
  • Psychosis with origin in childhood
  • Residual childhood psychosis
  • Residual infantile autism
  • Symbiotic infantile psychosis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Autism spectrum disorder
  • Infantile autism
  • Infantile psychosis
  • Kanner's syndrome

Type 1 Excludes

  • Asperger's syndrome F84.5

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Autism, autistic(childhood) (infantile)
    • Autism, autistic(childhood) (infantile)
      • spectrum disorder
    • Disorder(of)
      • autistic
    • Disorder(of)
      • autism spectrum
    • Disorder(of)
      • semantic pragmatic
        • with autism
    • Psychosis, psychotic
      • childhood
    • Psychosis, psychotic
      • infantile
    • Syndrome
      • Kanner's (autism)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD014
Neurodevelopmental disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Autistic Disorder

    a disorder beginning in childhood. it is 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. (dsm-v)

Patient EducationClinical

Autism Spectrum Disorder

Autism spectrum disorder (ASD) is a neurological and developmental disorder that begins early in childhood and lasts throughout a person's life. It affects how a person acts and interacts with others, communicates, and learns. It includes what used to be known as Asperger syndrome and pervasive developmental disorders.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F84.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
299.00 Autistic disord-current
Approximate The match is approximate rather than exact.
ICD-9-CM
299.01 Autistic disord-residual
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F84.0Overview

Is F84.0 (Pervasive developmental disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report autistic disorder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of F84.0?

Under the General Equivalence Mappings, autistic disorder converts to ICD-9-CM 299.00 (autistic disord-current) and 299.01 (autistic disord-residual). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.