Chapter 11

K00–K95: Diseases of the Digestive System

Diseases of the Digestive System diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)
Internal Codes
  • K41.90

    Unilateral femoral hernia, without obstruction or gangrene, not specified as recurrent

  • K41.91

    Unilateral femoral hernia, without obstruction or gangrene, recurrent

  • K42.0

    Umbilical hernia with obstruction, without gangrene

  • K42.1

    Umbilical hernia with gangrene

  • K42.9

    Umbilical hernia without obstruction or gangrene

  • K43.0

    Incisional hernia with obstruction, without gangrene

  • K43.1

    Incisional hernia with gangrene

  • K43.2

    Incisional hernia without obstruction or gangrene

  • K43.3

    Parastomal hernia with obstruction, without gangrene

  • K43.4

    Parastomal hernia with gangrene

  • K43.5

    Parastomal hernia without obstruction or gangrene

  • K43.6

    Other and unspecified ventral hernia with obstruction, without gangrene

  • K43.7

    Other and unspecified ventral hernia with gangrene

  • K43.9

    Ventral hernia without obstruction or gangrene

  • K44.0

    Diaphragmatic hernia with obstruction, without gangrene

  • K44.1

    Diaphragmatic hernia with gangrene

  • K44.9

    Diaphragmatic hernia without obstruction or gangrene

  • K45.0

    Other specified abdominal hernia with obstruction, without gangrene

  • K45.1

    Other specified abdominal hernia with gangrene

  • K45.8

    Other specified abdominal hernia without obstruction or gangrene

  • K46.0

    Unspecified abdominal hernia with obstruction, without gangrene

  • K46.1

    Unspecified abdominal hernia with gangrene

  • K46.9

    Unspecified abdominal hernia without obstruction or gangrene

  • K50.00

    Crohn's disease of small intestine without complications

  • K50.011

    Crohn's disease of small intestine with rectal bleeding

  • K50.012

    Crohn's disease of small intestine with intestinal obstruction

  • K50.013

    Crohn's disease of small intestine with fistula

  • K50.014

    Crohn's disease of small intestine with abscess

  • K50.018

    Crohn's disease of small intestine with other complication

  • K50.019

    Crohn's disease of small intestine with unspecified complications

  • K50.10

    Crohn's disease of large intestine without complications

  • K50.111

    Crohn's disease of large intestine with rectal bleeding

  • K50.112

    Crohn's disease of large intestine with intestinal obstruction

  • K50.113

    Crohn's disease of large intestine with fistula

  • K50.114

    Crohn's disease of large intestine with abscess

  • K50.118

    Crohn's disease of large intestine with other complication

  • K50.119

    Crohn's disease of large intestine with unspecified complications

  • K50.80

    Crohn's disease of both small and large intestine without complications

  • K50.811

    Crohn's disease of both small and large intestine with rectal bleeding

  • K50.812

    Crohn's disease of both small and large intestine with intestinal obstruction

  • K50.813

    Crohn's disease of both small and large intestine with fistula

  • K50.814

    Crohn's disease of both small and large intestine with abscess

  • K50.818

    Crohn's disease of both small and large intestine with other complication

  • K50.819

    Crohn's disease of both small and large intestine with unspecified complications

  • K50.90

    Crohn's disease, unspecified, without complications

  • K50.911

    Crohn's disease, unspecified, with rectal bleeding

  • K50.912

    Crohn's disease, unspecified, with intestinal obstruction

  • K50.913

    Crohn's disease, unspecified, with fistula

  • K50.914

    Crohn's disease, unspecified, with abscess

  • K50.918

    Crohn's disease, unspecified, with other complication

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