2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Esophagus, Stomach, And Duodenum 530-537 > 2006 ICD-9-CM Diagnosis 532 Duodenal ulcer View the most recent version of ICD-9-CM 532 A PEPTIC ULCER located in the DUODENUM. 532 is a non-specific code that cannot be used to specify a diagnosis 532 Includes erosion (acute) of duodenum ulcer (peptic): duodenum postpyloric 532 Excludes peptic ulcer NOS (533.0-533.9)