F91.3 — Oppositional defiant disorder

F91.3

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

What this code means

Oppositional defiant disorder is a childhood pattern of angry, argumentative and defiant behaviour toward authority figures.

Also called: oppositional defiant disorder, odd.

When this code is used

Used for oppositional defiant disorder.

Where it sits in ICD-10-CM

Code F91.3 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 F91.3?

F91.3 is the ICD-10-CM diagnosis code for “Oppositional defiant disorder”. Oppositional defiant disorder is a childhood pattern of angry, argumentative and defiant behaviour toward authority figures.

When is code F91.3 used?

Used for oppositional defiant disorder. 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.