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ICD-10 Guide
DiagnosesAutism Spectrum Disorder

Autism Spectrum Disorder

ICD-10 Coding for Autism Spectrum Disorder(F84.0)

PRIMARY SPECIALTYPediatrics
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Autism Spectrum Disorder?
Essential facts and insights about Autism Spectrum Disorder

Key Clinical Considerations:

  • Persistent deficits in social communication and social interaction across multiple contexts.
  • Restricted, repetitive patterns of behavior, interests, or activities.
  • Symptoms must be present in the early developmental period.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Comprehensive developmental history including milestones.
  • Behavioral assessments and standardized screening tools.
  • Detailed descriptions of social interactions and communication skills.

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines: Use specific codes based on the severity and type of autism spectrum disorder.
  • Common errors: Misclassifying the type of autism or failing to document co-occurring conditions.

Code Exclusions

Important Exclusions

  • Excluded conditions: Intellectual disability (F70-F79), social communication disorder (F80.89).
  • Alternative codes: Consider using codes for associated conditions such as anxiety or ADHD.

Related ICD-10 Codes

Primary Codes
F84.0
Autistic disorder
F84.1
Asperger's syndrome
F84.5
Pervasive developmental disorder, not otherwise specified
Ancillary Codes
F80.2
R48.8
Differential Codes
F84.5
F84.5
for cases with intact language and normal cognitive development.
F80.82
F80.82
when social communication deficits are present without repetitive behaviors.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Pediatrics

Specialty Applications

  • Patient populations: Children diagnosed with autism spectrum disorder.
  • Clinical settings: Pediatric clinics, developmental centers, and behavioral health facilities.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What are the documentation requirements?

Documentation must include developmental history, behavioral assessments, and evidence of symptoms in multiple settings.

What are the billing considerations?

Ensure accurate coding based on specific diagnosis and include any co-morbid conditions.