K20
⚠ Non-billable
Esophagitis
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K20
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- 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, but may code together
- 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?
ICD-10-CM code K20 represents Esophagitis. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K20 billable?
No. K20 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is K20 in?
K20 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
Related codes in the K20 category
K20.0
Eosinophilic esophagitis
Billable
K20.8
Other esophagitis
Non-billable
K20.9
Esophagitis, unspecified
Non-billable
K20.80
Other esophagitis without bleeding
Billable
K20.81
Other esophagitis with bleeding
Billable
K20.90
Esophagitis, unspecified without bleeding
Billable
K20.91
Esophagitis, unspecified with bleeding
Billable
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