ICD-10-CM > K00-K95 > K20-K31 > K31 > K31.8 K31.8 Other specified diseases of stomach and duodenum Non-Billable/Non-Specific Codes K31.81Angiodysplasia of stomach and duodenumK31.811Angiodysplasia of stomach and duodenum with bleedingK31.819Angiodysplasia of stomach and duodenum without bleedingK31.82Dieulafoy lesion (hemorrhagic) of stomach and duodenumK31.83AchlorhydriaK31.84GastroparesisK31.89Other diseases of stomach and duodenum