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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

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.-)

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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