F80.9 — Developmental disorder of speech and language, unspecified

F80.9

ICD-10 Chapter 5: Mental, Behavioral & Neurodevelopmental — illustrative image — Chapter 5: Mental, behavioral and neurodevelopmental disorders (F01–F99) — illustrative image

What this code means

A developmental disorder of speech and language in childhood, affecting understanding or expression of language.

Also called: developmental language disorder, speech delay.

When this code is used

Used for developmental disorder of speech and language, unspecified.

Where it sits in ICD-10-CM

Code F80.9 belongs to Chapter 5: Mental, behavioral and neurodevelopmental disorders, which covers codes F01–F99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Frequently asked questions

What is ICD-10-CM code F80.9?

F80.9 is the ICD-10-CM diagnosis code for “Developmental disorder of speech and language, unspecified”. A developmental disorder of speech and language in childhood, affecting understanding or expression of language.

When is code F80.9 used?

Used for developmental disorder of speech and language, unspecified. It belongs to Chapter 5 of ICD-10-CM (Mental, behavioral and neurodevelopmental disorders).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.