U.S. ICD-10-CM reference · FY2026 · April
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K20Category · further specificity requiredArchived

Esophagitis

HierarchyK20-K31 · K20

Code-level instructions

Excludes 1
  • erosion of esophagus (K22.1-)
  • esophagitis with gastro-esophageal reflux disease (K21.0-)
  • reflux esophagitis (K21.0-)
  • ulcerative esophagitis (K22.1-)
Excludes 2

eosinophilic gastritis or gastroenteritis (K52.81)

Use additional code
  • code to identify:
  • alcohol abuse and dependence (F10.-)

Inherited instructions

Chapters 11 · Diseases of the digestive system (K00-K95)

Excludes 2
  • 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 · Diseases of esophagus, stomach and duodenum (K20-K31)

Excludes 2

hiatus hernia (K44.-)

More specific codes

K20.0Eosinophilic esophagitisBillable / specificK20.8Other esophagitisCategory · further specificity requiredK20.9Esophagitis, unspecifiedCategory · further specificity required
Code edition