2026 ICD-10-CM Diagnosis Code K20.80Other esophagitis without bleeding

ICD-10-CM Codes›K00–K95›K20-K31›K20

ICD-10-CM K20.80
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K20.80 is a billable ICD-10-CM diagnosis code for other esophagitis without bleeding. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 391 through 392. Coders also document this condition as abscess of esophagus. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Esophageal disorders.

Code Identity

ICD-10-CM Code
K20.80
Billable Status
Yes — Valid for Submission
Code Describes
Other esophagitis without bleeding
Short Description
Other esophagitis without bleeding
Same as the full description in the CMS dataset.
Parent Code
K20.8
Other esophagitis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK20-K31Diseases of esophagus, stomach and duodenum
CategoryK20Esophagitis
This CodeK20.80Other esophagitis without bleeding

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abscess of esophagus
  • Autoimmune esophagitis
  • Crohn disease of upper gastrointestinal tract
  • Crohn's disease of esophagus
  • Radiation esophagitis
  • Varicella-zoster esophagitis
  • Viral esophagitis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Abscess of esophagus
  • Other esophagitis NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Abscess(connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
      • esophagus
    • Esophagitis(acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)
      • specified NEC (without bleeding)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG004
Esophageal disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Viral Esophagitis

    viral infection of the esophagus. it often occurs in immunocompromised patients and it is caused by cytomegalovirus or herpes simplex virus. symptoms include pain on swallowing, fever, and retrosternal burning.

Patient EducationClinical

Esophagus Disorders

The esophagus is the muscular tube that carries food and liquids from your mouth to the stomach. You may not be aware of your esophagus until you swallow something too large, too hot, or too cold. You may also notice it when something is wrong. You may feel pain or have trouble swallowing.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code History & ChangesHistory

Replacement K20.80 replaces the following previously assigned code(s):

  • K20.8 - Other esophagitis
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K20.80Overview

Is K20.80 (Other esophagitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other esophagitis without bleeding on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K20.80 group to?

When other esophagitis without bleeding is the principal diagnosis on an inpatient stay, it groups to MS-DRG 391, 392, with relative weights from 0.7796 to 1.2683 depending on complications. Higher weights mean higher Medicare reimbursement.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.