Chapter XI of ICD-10 is titled “Diseases of the digestive system”. It spans codes K00–K93, in 10 blocks.
What Chapter XI excludes
Conditions that look similar but belong under another code.
- certain conditions originating in the perinatal period P00-P96
- certain infectious and parasitic diseases A00-B99
- complications of pregnancy, childbirth and the puerperium O00-O99
- congenital malformations, deformations and chromosomal abnormalities Q00-Q99
- endocrine, nutritional and metabolic diseases E00-E90
- injury, poisoning and certain other consequences of external causes S00-T98
- neoplasms C00-D48
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified R00-R99
Blocks in Chapter XI
- K00–K14Diseases of oral cavity, salivary glands and jaws15 categories
- K20–K31Diseases of oesophagus, stomach and duodenum11 categories
- K35–K38Diseases of appendix4 categories
- K40–K46Hernia7 categories
- K50–K52Noninfective enteritis and colitis3 categories
- K55–K64Other diseases of intestines10 categories
- K65–K67Diseases of peritoneum3 categories
- K70–K77Diseases of liver8 categories
- K80–K87Disorders of gallbladder, biliary tract and pancreas7 categories
- K90–K93Other diseases of the digestive system4 categories
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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