ICD-10-CM>K00-K95>K80-K87>K81K81CholecystitisNon-Billable/Non-SpecificUse Additionalcode if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)Type 1 Excludescholecystitis with cholelithiasis (K80.-)CodesK81.0Acute cholecystitisK81.1Chronic cholecystitisK81.2Acute cholecystitis with chronic cholecystitisK81.9Cholecystitis, unspecified