Diseases of the digestive system (K00–K95)
Browse all the diagnosis codes used for diseases of the digestive system (k00–k95). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.
Diseases of the digestive system (K00–K95)
Excludes2: certain conditions originating in the perinatal period (P04-P96), certain infectious and parasitic diseases (A00-B99), complications of pregnancy, childbirth and the puerperium (O00-O9A), congenital malformations, deformations and chromosomal abnormalities (Q00-Q99), endocrine, nutritional and metabolic diseases (E00-E88), injury, poisoning and certain other consequences of external causes (S00-T88), neoplasms (C00-D49)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Diseases of oral cavity and salivary glands (K00-K14)
- Disorders of tooth development and eruption (K00)
- Embedded and impacted teeth (K01)
- Dental caries (K02)
- Other diseases of hard tissues of teeth (K03)
- Diseases of pulp and periapical tissues (K04)
- Gingivitis and periodontal diseases (K05)
- Other disorders of gingiva and edentulous alveolar ridge (K06)
- Other disorders of teeth and supporting structures (K08)
- Cysts of oral region, not elsewhere classified (K09)
- Diseases of salivary glands (K11)
- Stomatitis and related lesions (K12)
- Other diseases of lip and oral mucosa (K13)
- Diseases of tongue (K14)
Diseases of esophagus, stomach and duodenum (K20-K31)
- Esophagitis (K20)
- Gastro-esophageal reflux disease (K21)
- Other diseases of esophagus (K22)
- Disorders of esophagus in diseases classified elsewhere (K23)
- Gastric ulcer (K25)
- Duodenal ulcer (K26)
- Peptic ulcer, site unspecified (K27)
- Gastrojejunal ulcer (K28)
- Gastritis and duodenitis (K29)
- Functional dyspepsia (K30)
- Other diseases of stomach and duodenum (K31)
Diseases of appendix (K35-K38)
- Acute appendicitis (K35)
- Other appendicitis (K36)
- Unspecified appendicitis (K37)
- Other diseases of appendix (K38)
Hernia (K40-K46)
- Inguinal hernia (K40)
- Femoral hernia (K41)
- Umbilical hernia (K42)
- Ventral hernia (K43)
- Diaphragmatic hernia (K44)
- Other abdominal hernia (K45)
- Unspecified abdominal hernia (K46)
Noninfective enteritis and colitis (K50-K52)
- Crohn's disease [regional enteritis] (K50)
- Ulcerative colitis (K51)
- Other and unspecified noninfective gastroenteritis and colitis (K52)
Other diseases of intestines (K55-K64)
- Vascular disorders of intestine (K55)
- Paralytic ileus and intestinal obstruction without hernia (K56)
- Diverticular disease of intestine (K57)
- Irritable bowel syndrome (K58)
- Other functional intestinal disorders (K59)
- Fissure and fistula of anal and rectal regions (K60)
- Abscess of anal and rectal regions (K61)
- Other diseases of anus and rectum (K62)
- Other diseases of intestine (K63)
- Hemorrhoids and perianal venous thrombosis (K64)
Diseases of peritoneum and retroperitoneum (K65-K68)
- Peritonitis (K65)
- Other disorders of peritoneum (K66)
- Disorders of peritoneum in infectious diseases classified elsewhere (K67)
- Disorders of retroperitoneum (K68)
Diseases of liver (K70-K77)
- Alcoholic liver disease (K70)
- Toxic liver disease (K71)
- Hepatic failure, not elsewhere classified (K72)
- Chronic hepatitis, not elsewhere classified (K73)
- Fibrosis and cirrhosis of liver (K74)
- Other inflammatory liver diseases (K75)
- Other diseases of liver (K76)
- Liver disorders in diseases classified elsewhere (K77)
Disorders of gallbladder, biliary tract and pancreas (K80-K87)
- Cholelithiasis (K80)
- Cholecystitis (K81)
- Other diseases of gallbladder (K82)
- Other diseases of biliary tract (K83)
- Acute pancreatitis (K85)
- Other diseases of pancreas (K86)
- Disorders of gallbladder, biliary tract and pancreas in diseases classified elsewhere (K87)
Other diseases of the digestive system (K90-K95)
- Intestinal malabsorption (K90)
- Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified (K91)
- Other diseases of digestive system (K92)
- Complications of artificial openings of the digestive system (K94)
- Complications of bariatric procedures (K95)
