F84.0 Autistic disorder

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

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

Excludes1 (never code together)

• Asperger's syndrome (F84.5)

Applies from F84 Pervasive developmental disorders

Code also

• any associated medical condition and intellectual disabilities

Risk adjustment (HCC)

• RxHCC V08: HCC 133 — Anxiety and Other Psychiatric Disorders

MS-DRG index

Defines the logic of DRG(s) 884 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 299.00 Autistic disorder, current or active state (approximate)
• 299.01 Autistic disorder, residual state (approximate)

Code annotations containing back-references to F84.0

Back-references to F84.0

• Code Also: F78.A1 SYNGAP1-related intellectual disability ("autism spectrum disorder (F84.0)")
• Code Also: F78.A1 SYNGAP1-related intellectual disability ("autistic disorder (F84.0)")
• Type 1 Excludes: F80.82 Social pragmatic communication disorder ("autistic disorder (F84.0)")
• Type 1 Excludes: F84.2 Rett's syndrome ("Autistic disorder (F84.0)")
• Type 1 Excludes: F84.3 Other childhood disintegrative disorder ("Autistic disorder (F84.0)")
• Code Also: Q87.85 MED13L syndrome ("autism spectrum disorder (F84.0-)")
• Use Additional: Q87.87 Hao-Fountain Syndrome ("autism spectrum disorder (F84.0)")
• Use Additional: Q93.52 Phelan-McDermid syndrome ("autism spectrum disorder (F84.0)")
• Code Also: QA0 Neurodevelopmental disorders related to specific genetic pathogenic variants ("autism spectrum disorder (F84.0)")
• Type 1 Excludes: R47 Speech disturbances, not elsewhere classified ("autism (F84.0)")
• Code Also: Z71.87 Encounter for pediatric-to-adult transition counseling ("autism spectrum disorder (F84.0)")

Back-references to F84

• Type 2 Excludes: F80.1 Expressive language disorder ("pervasive developmental disorders (F84.-)")
• Type 2 Excludes: F80.2 Mixed receptive-expressive language disorder ("pervasive developmental disorders (F84.-)")
• Type 2 Excludes: F90 Attention-deficit hyperactivity disorders ("pervasive developmental disorders (F84.-)")
• Type 2 Excludes: F91 Conduct disorders ("pervasive developmental disorders (F84.-)")
• Type 2 Excludes: F94.0 Selective mutism ("pervasive developmental disorders (F84.-)")
• Code Also: G93.45 Developmental and epileptic encephalopathy ("pervasive developmental disorders (F84.-)")
• Use Additional: Q87.87 Hao-Fountain Syndrome ("pervasive developmental disorders (F84.-)")
• Code Also: QA0 Neurodevelopmental disorders related to specific genetic pathogenic variants ("pervasive developmental disorders (F84.-)")
• Code Also: Z15.1 Genetic susceptibility to epilepsy and neurodevelopmental disorders ("pervasive developmental disorders (F84.-)")
• Type 1 Excludes: Z55 Problems related to education and literacy ("disorders of psychological development (F80-F89)")
• Code First: Z91.83 Wandering in diseases classified elsewhere ("autism or pervasive developmental disorder (F84.-)")

Diagnosis Index entries for F84.0

• 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)

Nearby codes

• F84 Pervasive developmental disorders
• F84.0 Autistic disorder (this code)
• 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