ICD-10-CM · Chapter 11 · K00-K95
Diseases of the digestive system
863 billable diagnosis codes across 10 code blocks. FY2027 release.
Excludes 2 (not included here)
- 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)
K00-K14 Diseases of oral cavity and salivary glands
- K00 Disorders of tooth development and eruption
- K01 Embedded and impacted teeth
- K02 Dental caries
- K03 Other diseases of hard tissues of teeth
- K04 Diseases of pulp and periapical tissues
- K05 Gingivitis and periodontal diseases
- K06 Other disorders of gingiva and edentulous alveolar ridge
- K08 Other disorders of teeth and supporting structures
- K09 Cysts of oral region, not elsewhere classified
- K11 Diseases of salivary glands
- K12 Stomatitis and related lesions
- K13 Other diseases of lip and oral mucosa
- K14 Diseases of tongue
K20-K31 Diseases of esophagus, stomach and duodenum
- K20 Esophagitis
- K21 Gastro-esophageal reflux disease
- K22 Other diseases of esophagus
- K23 Disorders of esophagus in diseases classified elsewhere Billable
- K25 Gastric ulcer
- K26 Duodenal ulcer
- K27 Peptic ulcer, site unspecified
- K28 Gastrojejunal ulcer
- K29 Gastritis and duodenitis
- K30 Functional dyspepsia Billable
- K31 Other diseases of stomach and duodenum
K35-K38 Diseases of appendix
K40-K46 Hernia
K50-K52 Noninfective enteritis and colitis
K55-K64 Other diseases of intestines
- K55 Vascular disorders of intestine
- K56 Paralytic ileus and intestinal obstruction without hernia
- K57 Diverticular disease of intestine
- K58 Irritable bowel syndrome
- K59 Other functional intestinal disorders
- K60 Fissure and fistula of anal and rectal regions
- K61 Abscess of anal and rectal regions
- K62 Other diseases of anus and rectum
- K63 Other diseases of intestine
- K64 Hemorrhoids and perianal venous thrombosis
K65-K6A Diseases of peritoneum and retroperitoneum
K70-K77 Diseases of liver
- K70 Alcoholic liver disease
- K71 Toxic liver disease
- K72 Hepatic failure, not elsewhere classified
- K73 Chronic hepatitis, not elsewhere classified
- K74 Fibrosis and cirrhosis of liver
- K75 Other inflammatory liver diseases
- K76 Other diseases of liver
- K77 Liver disorders in diseases classified elsewhere Billable
K80-K87 Disorders of gallbladder, biliary tract and pancreas
K90-K95 Other diseases of the digestive system
Last reviewed: September 2026