F84.9

ICD-10Billable

Pervasive developmental disorder, unspecified

Official ICD-10-CM descriptor (FY2026)

Pervasive developmental disorder, unspecified

F84.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Atypical autism

Related codes in F84

Where this code sits

Chapter: 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Block: Pervasive and specific developmental disorders (F80-F89)
Parent code: F84

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.