F84.0 Autistic disorder
ICD-10-CM · CMS code reference
F84.0 is autistic disorder, which includes autism spectrum disorder, infantile autism and Kanner's syndrome. If Asperger's syndrome is documented, use F84.5 instead.
Coding notes
From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.
Also covers
- Autism spectrum disorder
- Infantile autism
- Infantile psychosis
- Kanner's syndrome
Excludes1
Not coded together with this code. The exception is when the two conditions are unrelated to each other.
- Asperger's syndrome (F84.5)
Code also
A second code may be needed. Sequencing depends on the encounter.
- any associated medical condition and intellectual disabilities
Related codes
Common questions
What's the difference between F84.0 and F84.5?
F84.0 is autistic disorder, which includes autism spectrum disorder. F84.5 is Asperger's syndrome. F84.0 has an Excludes1 note for F84.5, so the two are not coded together; use the one the provider documents.
Is F84.0 a billable code?
Yes. F84.0 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.