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K20

Non-billable

Esophagitis

K20 is the ICD-10-CM code for Esophagitis. It is a non-billable category code — use a more specific child code such as K20.0 for billing.

Status
Header (non-billable)
Chapter
K00-K95
Subcodes
3
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.

Excludes1 — not coded here

  • •erosion of esophagus (K22.1-)
  • •esophagitis with gastro-esophageal reflux disease (K21.0-)
  • •reflux esophagitis (K21.0-)
  • •ulcerative esophagitis (K22.1-)

Excludes2 — not included here

  • •eosinophilic gastritis or gastroenteritis (K52.81)

Use additional code

  • •code to identify:
  • •alcohol abuse and dependence (F10.-)

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
Eosinophilic Esophagitis

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

Frequently asked questions

What is ICD-10 code K20?
K20 is the ICD-10-CM code for "Esophagitis". It falls under K00-K95 Diseases of the digestive system.
Is K20 a billable code?
No — K20 is a non-billable header code. Use a more specific child code (such as K20.0) for billing.
What are the subcodes of K20?
K20 has 3 more specific child codes, including K20.0, K20.8, K20.9.
What is excluded from K20?
Excludes1 (not coded here): erosion of esophagus (K22.1-); esophagitis with gastro-esophageal reflux disease (K21.0-); reflux esophagitis (K21.0-); ulcerative esophagitis (K22.1-).

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

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