K20
Non-billableEsophagitis
Esophagitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •hiatus herniaK44
- •eosinophilic gastritis or gastroenteritisK52.81
Use Additional Code
Additional codes that should follow this code
- code to identify:
- •alcohol abuse and dependenceF10
Child Codes (3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(15)
UMLS
- Esophageal inflammationC0014868
- EsophagitidesC0014868
- EsophagitisC0014868
- Esophagitis (disorder)C0014868
- Esophagitis NOSC0014868
- Esophagitis, unspecifiedC0014868
- Inflammation of the esophagusC0014868
- Inflammation of the oesophagusC0014868
- Oesophageal inflammationC0014868
- OesophagitisC0014868
- Oesophagitis NOSC0014868
- Oesophagitis, unspecifiedC0014868
- esophagitisC0014868
- esophagus inflammationC0014868
- oesophagitisC0014868
Frequently Asked Questions
What is the ICD-10 code for esophagitis?
The ICD-10-CM code for esophagitis is K20. The full clinical description is "Esophagitis". K20 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code K20 mean?
ICD-10-CM code K20 represents “Esophagitis”. It is classified under Chapter 11: Diseases of the Digestive System and is a non-billable header code. Use a more specific child code for billing purposes.
Is K20 a billable code?
No, K20 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under K20.
What chapter is K20 in?
K20 is in Chapter 11: Diseases of the Digestive System (codes K00-K95).
What codes cannot be used with K20?
K20 has Excludes1 notes indicating codes that cannot be used together with it, including: erosion of esophagus (K22.1-); esophagitis with gastro-esophageal reflux disease (K21.0-); reflux esophagitis (K21.0-); and 1 more.
What are the subcategories under K20?
K20 has 3 child codes, including: K20.0 (Eosinophilic esophagitis), K20.8 (Other esophagitis), K20.9 (Esophagitis, unspecified).
Are additional codes required with K20?
Yes, when using K20, also report: ; alcohol abuse and dependence (F10.-).
What are the UMLS CUIs for K20?
K20 is linked to 1 UMLS Concept Unique Identifier: C0014868. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does K20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like esophagitis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of K20?
K20 maps to the ICD-11 code: DA24.Z (Oesophagitis, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.