K21.0
Non-billableGastro-esophageal reflux disease with esophagitis
Gastro-esophageal reflux disease with 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
Child Codes (2)
Related Conditions
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
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Extracted Entities
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Also Known As / Clinical Terms(14)
UMLS
- Esophageal reflux with esophagitisC0677659
- Gastro-esophageal reflux disease with esophagitisC0677659
- Gastro-oesophageal reflux disease with oesophagitisC0677659
- Gastroesophageal reflux disease with esophagitisC0677659
- Gastroesophageal reflux disease with esophagitis (disorder)C0677659
- Gastroesophageal reflux disease with oesophagitisC0677659
- Oesophageal reflux with oesophagitisC0677659
- Peptic esophagitisC0677659
- Peptic oesophagitisC0677659
- Reflux esophagitisC0677659
- Reflux oesophagitisC0677659
- esophagitis refluxingC0677659
- reflux esophagitisC0677659
- reflux oesophagitisC0677659
Frequently Asked Questions
What is the ICD-10 code for gastro-esophageal reflux disease with esophagitis?
The ICD-10-CM code for gastro-esophageal reflux disease with esophagitis is K21.0. The full clinical description is "Gastro-esophageal reflux disease with esophagitis". K21.0 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code K21.0 mean?
ICD-10-CM code K21.0 represents “Gastro-esophageal reflux disease with 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 K21.0 a billable code?
No, K21.0 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under K21.0.
What chapter is K21.0 in?
K21.0 is in Chapter 11: Diseases of the Digestive System (codes K00-K95).
What codes cannot be used with K21.0?
K21.0 has Excludes1 notes indicating codes that cannot be used together with it, including: newborn esophageal reflux (P78.83).
What are the subcategories under K21.0?
K21.0 has 2 child codes, including: K21.00 (Gastro-esophageal reflux dis with esophagitis, without bleed), K21.01 (Gastro-esophageal reflux dis with esophagitis, with bleed).
What are the UMLS CUIs for K21.0?
K21.0 is linked to 1 UMLS Concept Unique Identifier: C0677659. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does K21.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like gastro-esophageal reflux disease with 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 K21.0?
K21.0 maps to the ICD-11 code: DA22.Z (Gastro-oesophageal reflux disease, 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.