2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Esophagus, Stomach, And Duodenum 530-537 > Other Disorders Of Stomach And Duodenum 537.* > 2006 ICD-9-CM Diagnosis 537.9 Unspecified disorder of stomach and duodenum View the most recent version of ICD-9-CM 537.9 537.9 is a specific code that can be used to specify a diagnosis 537.9 contains 5 index entries View the ICD-9-CM Volume 1 537.* hierarchy  Index entries containing 537.9: Disease, diseased - see also Syndrome duodenum NEC 537.9 specified NEC 537.89 gastric (see also Disease, stomach) 537.9 stomach NEC (organic) 537.9 functional 536.9 psychogenic 306.4 lardaceous Dysfunction pylorus 537.9 Gastropathy 537.9 erythematous 535.5 exudative 579.8