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K20.9

Non-billable

Esophagitis, unspecified

K20.9 is the ICD-10-CM code for Esophagitis, unspecified. It is a non-billable category code — use a more specific child code such as K20.90 for billing.

Status
Header (non-billable)
Chapter
K00-K95
Parent
K20
Subcodes
2
Edition
FY2026

K00-K95 Diseases of the digestive system

What this means — in plain language

MedlinePlus · NIH

What are esophagus disorders? Esophagus disorders are problems with how your esophagus works. The esophagus is the tube that carries food from your mouth to your stomach. You usually don't notice it unless you swallow something too big, hot, or cold. You might also notice it if something is wrong. When that happens, you might feel pain or have trouble swallowing (dysphagia). What causes esophagus disorders? The…

Read more about Esophagus Disorders at MedlinePlus ↗

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

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code K20.9?
K20.9 is the ICD-10-CM code for "Esophagitis, unspecified". It falls under K00-K95 Diseases of the digestive system.
Is K20.9 a billable code?
No — K20.9 is a non-billable header code. Use a more specific child code (such as K20.90) for billing.
What are the subcodes of K20.9?
K20.9 has 2 more specific child codes, including K20.90, K20.91.

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

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