Icd 9 code for gastroenteritis unspecified July 8, 2019 16 32 64 128 Icd 9 code for gastroenteritis and colitis of unspecified origin Icd 9 code for infectious gastroenteritis and colitis unspecified Icd 9 code for noninfective gastroenteritis and colitis unspecified Icd 9 gastroenteritis Icd 9 code for gastroenteritis Gastroenteritis. icd 10