All ICD10 Codes
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)
All CodesBillable Only
Internal Codes
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  • K31.A13—

    Gastric intestinal metaplasia without dysplasia, involving the fundus

  • K31.A14—

    Gastric intestinal metaplasia without dysplasia, involving the cardia

  • K31.A15—

    Gastric intestinal metaplasia without dysplasia, involving multiple sites

  • K31.A19—

    Gastric intestinal metaplasia without dysplasia, unspecified site

  • K31.A21—

    Gastric intestinal metaplasia with low grade dysplasia

  • K31.A22—

    Gastric intestinal metaplasia with high grade dysplasia

  • K31.A29—

    Gastric intestinal metaplasia with dysplasia, unspecified

  • K35.200—

    Acute appendicitis with generalized peritonitis, without perforation or abscess

  • K35.201—

    Acute appendicitis with generalized peritonitis, with perforation, without abscess

  • K35.209—

    Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforation

  • K35.210—

    Acute appendicitis with generalized peritonitis, without perforation, with abscess

  • K35.211—

    Acute appendicitis with generalized peritonitis, with perforation and abscess

  • K35.219—

    Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforation

  • K35.30—

    Acute appendicitis with localized peritonitis, without perforation or gangrene

  • K35.31—

    Acute appendicitis with localized peritonitis and gangrene, without perforation

  • K35.32—

    Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess

  • K35.33—

    Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess

  • K35.80—

    Unspecified acute appendicitis

  • K35.890—

    Other acute appendicitis without perforation or gangrene

  • K35.891—

    Other acute appendicitis without perforation, with gangrene

  • K36—

    Other appendicitis

  • K37—

    Unspecified appendicitis

  • K38.0—

    Hyperplasia of appendix

  • K38.1—

    Appendicular concretions

  • K38.2—

    Diverticulum of appendix

  • K38.3—

    Fistula of appendix

  • K38.8—

    Other specified diseases of appendix

  • K38.9—

    Disease of appendix, unspecified

  • K40.00—

    Bilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent

  • K40.01—

    Bilateral inguinal hernia, with obstruction, without gangrene, recurrent

  • K40.10—

    Bilateral inguinal hernia, with gangrene, not specified as recurrent

  • K40.11—

    Bilateral inguinal hernia, with gangrene, recurrent

  • K40.20—

    Bilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent

  • K40.21—

    Bilateral inguinal hernia, without obstruction or gangrene, recurrent

  • K40.30—

    Unilateral inguinal hernia, with obstruction, without gangrene, not specified as recurrent

  • K40.31—

    Unilateral inguinal hernia, with obstruction, without gangrene, recurrent

  • K40.40—

    Unilateral inguinal hernia, with gangrene, not specified as recurrent

  • K40.41—

    Unilateral inguinal hernia, with gangrene, recurrent

  • K40.90—

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

  • K40.91—

    Unilateral inguinal hernia, without obstruction or gangrene, recurrent

  • K41.00—

    Bilateral femoral hernia, with obstruction, without gangrene, not specified as recurrent

  • K41.01—

    Bilateral femoral hernia, with obstruction, without gangrene, recurrent

  • K41.10—

    Bilateral femoral hernia, with gangrene, not specified as recurrent

  • K41.11—

    Bilateral femoral hernia, with gangrene, recurrent

  • K41.20—

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

  • K41.21—

    Bilateral femoral hernia, without obstruction or gangrene, recurrent

  • K41.30—

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

  • K41.31—

    Unilateral femoral hernia, with obstruction, without gangrene, recurrent

  • K41.40—

    Unilateral femoral hernia, with gangrene, not specified as recurrent

  • K41.41—

    Unilateral femoral hernia, with gangrene, recurrent

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