F43.8

Non-billable

Other reactions to severe stress

F43.8 is the ICD-10-CM code for Other reactions to severe stress. It is a non-billable category code — use a more specific child code such as F43.81 for billing.

Status
Header (non-billable)
Chapter
F01-F99
Parent
F43
Subcodes
2
Edition
FY2026

F01-F99 Mental, Behavioral and Neurodevelopmental disorders

What this means — in plain language

MedlinePlus · NIH

What is stress? Stress is how your brain and body respond to a challenge or demand. When you are stressed, your body releases certain hormones . Hormones are chemicals that travel in your bloodstream and control how different parts of your body work. The hormones that are released when you are stressed make you alert and ready to act. They can raise your blood pressure, heart rate, and blood glucose (blood sugar)…

Read more about Stress at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • Other specified trauma and stressor-related disorder

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code F43.8?
F43.8 is the ICD-10-CM code for "Other reactions to severe stress". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
Is F43.8 a billable code?
No — F43.8 is a non-billable header code. Use a more specific child code (such as F43.81) for billing.
What are the subcodes of F43.8?
F43.8 has 2 more specific child codes, including F43.81, F43.89.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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