ICD-10-CM

Diseases of esophagus, stomach and duodenum (K20-K31) excludes2 hiatus hernia (K44.-)
K20: Esophagitis
K21: Gastro-esophageal reflux disease
K22: Other diseases of esophagus
K23: Disorders of esophagus in diseases classified elsewhere
K25: Gastric ulcer
K26: Duodenal ulcer
K27: Peptic ulcer, site unspecified
K28: Gastrojejunal ulcer
K29: Gastritis and duodenitis
K30: Functional dyspepsia
K31: Other diseases of stomach and duodenum

Diseases of esophagus, stomach and duodenum (K20-K31)

excludes2
hiatus hernia (K44.-)