2022 ICD-10-CM Code K20.90

Esophagitis, unspecified without bleeding

Version 2021

Valid for Submission

ICD-10:K20.90
Short Description:Esophagitis, unspecified without bleeding
Long Description:Esophagitis, unspecified without bleeding

Code Classification

  • Diseases of the digestive system (K00–K93)
    • Diseases of esophagus, stomach and duodenum (K20-K31)
      • Esophagitis (K20)

K20.90 is a billable diagnosis code used to specify a medical diagnosis of esophagitis, unspecified without bleeding. The code K20.90 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code K20.90 might also be used to specify conditions or terms like acute esophagitis, bacterial esophagitis, barrett's esophagus, barrett's esophagus with esophagitis, chemical esophagitis , chemical esophagitis, etc.

Unspecified diagnosis codes like K20.90 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code K20.90:


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code K20.90 are found in the index:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Replacement Code

K2090 replaces the following previously assigned ICD-10 code(s):

Information for Patients


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.

The most common problem with the esophagus is GERD (gastroesophageal reflux disease). With GERD, a muscle at the end of your esophagus does not close properly. This allows stomach contents to leak back, or reflux, into the esophagus and irritate it. Over time, GERD can cause damage to the esophagus.

Other problems include heartburn, cancer, and eosinophilic esophagitis. Doctors may use various tests to make a diagnosis. These include imaging tests, an upper endoscopy, and a biopsy.

Treatment depends on the problem. Some problems get better with over-the-counter medicines or changes in diet. Others may need prescription medicines or surgery.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


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Code History

  • FY 2021 - Code Added, effective from 10/1/2020 through 9/30/2021