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 =Diseases of the digestive system (K00-K93)=
 * 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-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-R94)
 * This chapter contains the following blocks:
 * K00-K14 Diseases of oral cavity and salivary glands
 * K20-K31 Diseases of esophagus, stomach and duodenum
 * K35-K38 Diseases of appendix
 * K40-K46 Hernia
 * K50-K52 Noninfective enteritis and colitis
 * K55-K63 Other diseases of intestines
 * K65-K68 Diseases of peritoneum and retroperitoneum
 * K70-K77 Diseases of liver
 * K80-K87 Disorders of gallbladder, biliary tract and pancreas
 * K90-K94 Other diseases of the digestive system

=Diseases of oral cavity and salivary glands (K00-K14)=

K00 Disorders of tooth development and eruption

 * Excludes2: embedded and impacted teeth (K01.-)
 * K00.0 Anodontia
 * Hypodontia
 * Oligodontia
 * Excludes1: acquired absence of teeth (K08.1-)
 * K00.1 Supernumerary teeth
 * Distomolar
 * Fourth molar
 * Mesiodens
 * Paramolar
 * Supplementary teeth
 * Excludes2: supernumerary roots (K00.2)
 * K00.2 Abnormalities of size and form of teeth
 * Concrescence of teeth
 * Fusion of teeth
 * Gemination of teeth
 * Dens