---
title: "ICD-10-CM F43.89: Other reactions to severe stress | BillingBrief"
description: "F43.89 is for a reaction to severe stress that the provider documents as a specific kind with no code of its own in F43. Prolonged grief disorder has its…"
canonical: "https://billingbrief.com/icd10/f43.89/"
language: "en"
---

# F43.89 Other reactions to severe stress

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

F43.89 is for a reaction to severe stress that the provider documents as a specific kind with no code of its own in F43. Prolonged grief disorder has its own code, F43.81.

## Related codes

-   [`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/)
-   [`F43.25` Adjustment disorder with mixed disturbance of emotions and conduct ICD-10-CM](https://billingbrief.com/icd10/f43.25/)
-   [`F43.29` Adjustment disorder with other symptoms ICD-10-CM](https://billingbrief.com/icd10/f43.29/)
-   [`F43.81` Prolonged grief disorder ICD-10-CM](https://billingbrief.com/icd10/f43.81/)
-   [`F43.9` Reaction to severe stress, unspecified ICD-10-CM](https://billingbrief.com/icd10/f43.9/)

## Common questions

### Is F43.89 a billable code?

Yes. F43.89 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/).