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ICD-10-CM Codes
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K00-K95
Diseases of the digestive system
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K20-K31
Diseases of esophagus, stomach and duodenum
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K20-
Esophagitis
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2021 ICD-10-CM Diagnosis Code K20.0
2021 ICD-10-CM Diagnosis Code K20.0
Eosinophilic esophagitis
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- K20.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM K20.0 became effective on October 1, 2020.
- This is the American ICD-10-CM version of K20.0 - other international versions of ICD-10 K20.0 may differ.
The following code(s) above
K20.0 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
K20.0:
- K00-K95
2021 ICD-10-CM Range K00-K95
Diseases of the digestive systemType 2 Excludes- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- K20-K31
2021 ICD-10-CM Range K20-K31
Diseases of esophagus, stomach and duodenum
- K20
ICD-10-CM Diagnosis Code K20
Esophagitis
2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
Type 1 Excludes- erosion of esophagus (K22.1-)
- esophagitis with gastro-esophageal reflux disease (K21.0-)
- reflux esophagitis (K21.0-)
- ulcerative esophagitis (K22.1-)
Type 2 Excludes- eosinophilic gastritis or gastroenteritis (K52.81)
Use Additional- code to identify:
- alcohol abuse and dependence (F10.-)
- Allergic inflammation of the esophagus. Morphologically, it is characterized by the presence of eosinophils infiltrating the esophageal epithelium. Patients present with swallowing difficulty and heartburn.
- Chronic esophagitis characterized by esophageal mucosal eosinophilia. It is diagnosed when an increase in eosinophils are present over the entire esophagus. The reflux symptoms fail to respond to proton pump inhibitors treatment, unlike in gastroesophageal reflux disease. The symptoms are associated with ige-mediated hypersensitivity to food or inhalant allergens.
ICD-10-CM K20.0 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
- 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc
Convert K20.0 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
Code annotations containing back-references to K20.0:
- Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding) K20.90
ICD-10-CM Diagnosis Code K20.90
Esophagitis, unspecified without bleeding
2021 - New Code Billable/Specific Code
ICD-10-CM Codes Adjacent To K20.0
K14.2 Median rhomboid glossitis
K14.3 Hypertrophy of tongue papillae
K14.4 Atrophy of tongue papillae
K14.8 Other diseases of tongue
K14.9 Disease of tongue, unspecified
K20.0
Eosinophilic esophagitis
K20.9 Esophagitis, unspecified
K21 Gastro-esophageal reflux disease
K21.0 Gastro-esophageal reflux disease with esophagitis
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
