F84.9

✓ Billable

Pervasive developmental disorder, unspecified

Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

Also Known As

Atypical autism

✅ No additional coding notes for F84.9

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Code Information

CodeF84.9

BillableYes

ParentF84

CategoryMental, Behavioral and Neurodevelopmental disorders (F01-F99)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)