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ICD-10-CM Code K20.9
Esophagitis, unspecified

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

K20.9 is a billable ICD code used to specify a diagnosis of esophagitis, unspecified. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code K20 is used to code Eosinophilic esophagitis

Eosinophilic esophagitis (eosinophilic oesophagitis), also known as allergic oesophagitis, is an allergic inflammatory condition of the esophagus that involves eosinophils, a type of white blood cell. Symptoms are swallowing difficulty, food impaction, and heartburn.

Specialty: Gastroenterology
MeSH Code: D057765
ICD 9 Code: 530.13

Micrograph showing eosinophilic esophagitis. H&E stain.

Source: Wikipedia

Coding Notes for K20.9 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Esophagitis NOS

MS-DRG Mapping

  • DRG Group #391-392 - Esophagitis, gastroent and misc digest disorders with MCC.
  • DRG Group #391-392 - Esophagitis, gastroent and misc digest disorders without MCC.

Related Concepts SNOMET-CT

  • Pill esophagitis (disorder)

Coding Advice SNOMET-CT

  • Consider additional code to identify specific condition or disease

ICD-10-CM Alphabetical Index References for 'K20.9 - Esophagitis, unspecified'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code K20.9. Click on any term below to browse the alphabetical index.

Esophagitis(acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (K20.9)

Equivalent ICD-9 Codes GENERAL EQUIVALENCE MAPPINGS (GEM)

Esophagitis, unspecified (approximate match)
Acute esophagitis (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code K20.9 and a single ICD9 code, 530.12 is an approximate match for comparison and conversion purposes.


Parent Code: K20 - Esophagitis

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/K209