Diseases of esophagus, stomach and duodenum - K20-K31

 Type 2 Excludes

• hiatus hernia (K44.-)

 Codes

• 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