ICD-10-CM 2027
ICD-10 code for Autistic disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › autistic”. Page updated September 29, 2026.
About coding Autistic disorder
The ICD-10-CM code for Autistic disorder is F84.0 (Autistic disorder).
Within F84 (pervasive developmental disorders), F84.0 is specifically for Autistic disorder. Related codes cover Rett's syndrome (F84.2), other childhood disintegrative disorder (F84.3), Asperger's syndrome (F84.5), other pervasive developmental disorders (F84.8) and pervasive developmental disorder, unspecified (F84.9).
Don't report F84.0 together with the conditions in its Excludes1 note: Asperger's syndrome (F84.5).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Don't confuse with (Excludes1 for F84.0)
- Asperger's syndrome (F84.5)
Common questions about Autistic disorder ICD-10 codes
What is the ICD-10 code for Autistic disorder?
- F84.0 — Autistic disorder.
Is F84.0 billable?
- Yes. F84.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F84.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F84.0 as a principal diagnosis.
Is F84.0 a CC or MCC?
- F84.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.