---
title: "ICD-10-CM F43.0: Acute stress reaction | BillingBrief"
description: "F43.0 covers a short-term reaction to stress. It includes the terms acute crisis reaction, crisis state, psychic shock, combat fatigue, and combat and…"
canonical: "https://billingbrief.com/icd10/f43.0/"
language: "en"
---

# F43.0 Acute stress reaction

ICD-10-CM · [CMS code reference](#source)

F43.0 covers a short-term reaction to stress. It includes the terms acute crisis reaction, crisis state, psychic shock, combat fatigue, and combat and operational stress reaction.

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Also covers

-   Acute crisis reaction
-   Acute reaction to stress
-   Combat and operational stress reaction
-   Combat fatigue
-   Crisis state
-   Psychic shock

## Related codes

-   [`F43.10` Post-traumatic stress disorder, unspecified ICD-10-CM](https://billingbrief.com/icd10/f43.10/)
-   [`F43.11` Post-traumatic stress disorder, acute ICD-10-CM](https://billingbrief.com/icd10/f43.11/)
-   [`F43.12` Post-traumatic stress disorder, chronic ICD-10-CM](https://billingbrief.com/icd10/f43.12/)
-   [`F43.20` Adjustment disorder, unspecified ICD-10-CM](https://billingbrief.com/icd10/f43.20/)
-   [`F43.21` Adjustment disorder with depressed mood ICD-10-CM](https://billingbrief.com/icd10/f43.21/)
-   [`F43.22` Adjustment disorder with anxiety ICD-10-CM](https://billingbrief.com/icd10/f43.22/)
-   [`F43.23` Adjustment disorder with mixed anxiety and depressed mood ICD-10-CM](https://billingbrief.com/icd10/f43.23/)
-   [`F43.24` Adjustment disorder with disturbance of conduct ICD-10-CM](https://billingbrief.com/icd10/f43.24/)

## Common questions

### Is F43.0 a billable code?

Yes. F43.0 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

F43 Reaction to severe stress, and adjustment disorders

Chapter

Mental, behavioral and neurodevelopmental disorders

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).