F84.9 – Pervasive developmental disorder, unspecified

ICD-10-CM 2027 diagnosis code · Pervasive and specific developmental disorders

Billable code

ICD-10-CM code F84.9

Code: F84.9 (claims format: F849)
Description: Pervasive developmental disorder, unspecified
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Block: F80-F89 Pervasive and specific developmental disorders
Parent codes: F84

Notes for F84.9

Applicable to:

Atypical autism

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

F84 – Pervasive developmental disorders

Code also:

any associated medical condition and intellectual disabilities

Index terms for F84.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in F84

F84.0 – Autistic disorderBillable
F84.2 – Rett's syndromeBillable
F84.3 – Other childhood disintegrative disorderBillable
F84.5 – Asperger's syndromeBillable
F84.8 – Other pervasive developmental disordersBillable

Frequently asked questions

What is ICD-10 code F84.9?

F84.9 is the ICD-10-CM code for pervasive developmental disorder, unspecified, in the block F80-F89 (Pervasive and specific developmental disorders).

Is F84.9 a billable code?

Yes. F84.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does F84.9 belong to?

It belongs to category F84 – Pervasive developmental disorders.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.