ICD-10 F84.0
Billable / Specific CCAutistic disorder
About ICD-10-CM F84.0
ICD-10-CM code F84.0 represents Autistic disorder. This is a billable/specific code in the Mental, Behavioral, and Neurodevelopmental chapter (block F84). The 2026 edition of ICD-10-CM F84.0 became effective on October 1, 2025.
Coding Tips for F84.0
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
F84.0 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under F84.0. Per CMS ICD-10-CM Tabular 2026.
- Autism spectrum disorder
- Infantile autism
- Infantile psychosis
- Kanner's syndrome
Type 1 Excludes
Pure excludes, these codes can never be coded together with F84.0. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- Asperger's syndrome (F84.5)
Inpatient DRG Impact, CC
codes Autistic disorder. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for F84.0
Local Coverage Determinations (LCDs) from CMS MACs that list F84.0 as a covered diagnosis.
Showing top 10 of 398 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing F84.0.
1 Aetna
3 Cigna
5 Medicare
CPT Codes Commonly Billed with F84.0
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 90834 Psychotherapy 45 min — GAD, anxiety, MDD, recurrent depression, PTSD, adjustment disorder, BPD, OCD, bipolar, ADHD, autism, anorexia, bulimia Psychiatry
- 90791 Psychiatric diagnostic evaluation — any mental health dx for initial assessment, suicidal ideation, hallucinations, antisocial behavior Psychiatry
- 90792 Psychiatric eval with medical services — schizophrenia, bipolar, MDD, anxiety, personality disorder, ASD, ADHD, substance use Psychiatry
Convert F84.0 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| F84.0 | 29900 | 10000 |
| F84.0 | 29901 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To F84.0
Other codes in section F80-F89 (Pervasive and specific developmental disorders).
ICD-10 F84.0, Billing FAQ
Is ICD-10 code F84.0 billable? +
Yes, F84.0 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to F84.0? +
ICD-10 F84.0 includes: Autism spectrum disorder; Infantile autism; Infantile psychosis, and 1 more clinical synonyms.
What codes are Type 1 Excludes for F84.0? +
Type 1 Excludes (never code together with F84.0): Asperger's syndrome (F84.5)
Is F84.0 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with F84.0? +
Procedures frequently paired with F84.0 include: 90834, 90791, 90792.
What ICD-9 codes does F84.0 map to? +
Per CMS GEMs, F84.0 maps to ICD-9 codes: 29900, 29901. Useful for legacy data review and historical claim analysis.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team