F43.10 — Post-traumatic stress disorder, unspecified

F43.10

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

What this code means

Post-traumatic stress disorder (PTSD) can follow a traumatic event, causing flashbacks, avoidance and heightened alertness.

Also called: ptsd, post-traumatic stress disorder.

When this code is used

Used for post-traumatic stress disorder when chronicity is not specified.

Where it sits in ICD-10-CM

Code F43.10 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.

Related symptoms

Insomnia

Frequently asked questions

What is ICD-10-CM code F43.10?

F43.10 is the ICD-10-CM diagnosis code for “Post-traumatic stress disorder, unspecified”. Post-traumatic stress disorder (PTSD) can follow a traumatic event, causing flashbacks, avoidance and heightened alertness.

When is code F43.10 used?

Used for post-traumatic stress disorder when chronicity is not specified. 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.