Section K55-K64 | Other diseases of intestines

K55

Code hierarchy

K55 Vascular disorders of intestine
- K55.0 Acute vascular disorders of intestine
  - K55.01 Acute (reversible) ischemia of small intestine
    - K55.011 Focal (segmental) acute (reversible) ischemia of small intestine
    - K55.012 Diffuse acute (reversible) ischemia of small intestine
    - K55.019 Acute (reversible) ischemia of small intestine, extent unspecified
  - K55.02 Acute infarction of small intestine
    - K55.021 Focal (segmental) acute infarction of small intestine
    - K55.022 Diffuse acute infarction of small intestine
    - K55.029 Acute infarction of small intestine, extent unspecified
  - K55.03 Acute (reversible) ischemia of large intestine
    - K55.031 Focal (segmental) acute (reversible) ischemia of large intestine
    - K55.032 Diffuse acute (reversible) ischemia of large intestine
    - K55.039 Acute (reversible) ischemia of large intestine, extent unspecified
  - K55.04 Acute infarction of large intestine
    - K55.041 Focal (segmental) acute infarction of large intestine
    - K55.042 Diffuse acute infarction of large intestine
    - K55.049 Acute infarction of large intestine, extent unspecified
  - K55.05 Acute (reversible) ischemia of intestine, part unspecified
    - K55.051 Focal (segmental) acute (reversible) ischemia of intestine, part unspecified
    - K55.052 Diffuse acute (reversible) ischemia of intestine, part unspecified
    - K55.059 Acute (reversible) ischemia of intestine, part and extent unspecified
  - K55.06 Acute infarction of intestine, part unspecified
    - K55.061 Focal (segmental) acute infarction of intestine, part unspecified
    - K55.062 Diffuse acute infarction of intestine, part unspecified
    - K55.069 Acute infarction of intestine, part and extent unspecified
- K55.1 Chronic vascular disorders of intestine
- K55.2 Angiodysplasia of colon
  - K55.20 Angiodysplasia of colon without hemorrhage
  - K55.21 Angiodysplasia of colon with hemorrhage
- K55.3 Necrotizing enterocolitis
  - K55.30 Necrotizing enterocolitis, unspecified
  - K55.31 Stage 1 necrotizing enterocolitis
  - K55.32 Stage 2 necrotizing enterocolitis
  - K55.33 Stage 3 necrotizing enterocolitis
- K55.8 Other vascular disorders of intestine
- K55.9 Vascular disorder of intestine, unspecified

Vascular disorders of intestine

K56

Code hierarchy

K56 Paralytic ileus and intestinal obstruction without hernia
- K56.0 Paralytic ileus
- K56.1 Intussusception
- K56.2 Volvulus
- K56.3 Gallstone ileus
- K56.4 Other impaction of intestine
  - K56.41 Fecal impaction
  - K56.49 Other impaction of intestine
- K56.5 Intestinal adhesions [bands] with obstruction (postinfection)
  - K56.50 Intestinal adhesions [bands], unspecified as to partial versus complete obstruction
  - K56.51 Intestinal adhesions [bands], with partial obstruction
  - K56.52 Intestinal adhesions [bands] with complete obstruction
- K56.6 Other and unspecified intestinal obstruction
  - K56.60 Unspecified intestinal obstruction
    - K56.600 Partial intestinal obstruction, unspecified as to cause
    - K56.601 Complete intestinal obstruction, unspecified as to cause
    - K56.609 Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction
  - K56.69 Other intestinal obstruction
    - K56.690 Other partial intestinal obstruction
    - K56.691 Other complete intestinal obstruction
    - K56.699 Other intestinal obstruction unspecified as to partial versus complete obstruction
- K56.7 Ileus, unspecified

Paralytic ileus and intestinal obstruction without hernia

K57

Code hierarchy

K57 Diverticular disease of intestine
- K57.0 Diverticulitis of small intestine with perforation and abscess
  - K57.00 Diverticulitis of small intestine with perforation and abscess without bleeding
  - K57.01 Diverticulitis of small intestine with perforation and abscess with bleeding
- K57.1 Diverticular disease of small intestine without perforation or abscess
  - K57.10 Diverticulosis of small intestine without perforation or abscess without bleeding
  - K57.11 Diverticulosis of small intestine without perforation or abscess with bleeding
  - K57.12 Diverticulitis of small intestine without perforation or abscess without bleeding
  - K57.13 Diverticulitis of small intestine without perforation or abscess with bleeding
- K57.2 Diverticulitis of large intestine with perforation and abscess
  - K57.20 Diverticulitis of large intestine with perforation and abscess without bleeding
  - K57.21 Diverticulitis of large intestine with perforation and abscess with bleeding
- K57.3 Diverticular disease of large intestine without perforation or abscess
  - K57.30 Diverticulosis of large intestine without perforation or abscess without bleeding
  - K57.31 Diverticulosis of large intestine without perforation or abscess with bleeding
  - K57.32 Diverticulitis of large intestine without perforation or abscess without bleeding
  - K57.33 Diverticulitis of large intestine without perforation or abscess with bleeding
- K57.4 Diverticulitis of both small and large intestine with perforation and abscess
  - K57.40 Diverticulitis of both small and large intestine with perforation and abscess without bleeding
  - K57.41 Diverticulitis of both small and large intestine with perforation and abscess with bleeding
- K57.5 Diverticular disease of both small and large intestine without perforation or abscess
  - K57.50 Diverticulosis of both small and large intestine without perforation or abscess without bleeding
  - K57.51 Diverticulosis of both small and large intestine without perforation or abscess with bleeding
  - K57.52 Diverticulitis of both small and large intestine without perforation or abscess without bleeding
  - K57.53 Diverticulitis of both small and large intestine without perforation or abscess with bleeding
- K57.8 Diverticulitis of intestine, part unspecified, with perforation and abscess
  - K57.80 Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding
  - K57.81 Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding
- K57.9 Diverticular disease of intestine, part unspecified, without perforation or abscess
  - K57.90 Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding
  - K57.91 Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding
  - K57.92 Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding
  - K57.93 Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding

Diverticular disease of intestine

K58

Code hierarchy

K58 Irritable bowel syndrome
- K58.0 Irritable bowel syndrome with diarrhea
- K58.1 Irritable bowel syndrome with constipation
- K58.2 Mixed irritable bowel syndrome
- K58.8 Other irritable bowel syndrome
- K58.9 Irritable bowel syndrome, unspecified

Irritable bowel syndrome

K59

Code hierarchy

K59 Other functional intestinal disorders
- K59.0 Constipation
  - K59.00 Constipation, unspecified
  - K59.01 Slow transit constipation
  - K59.02 Outlet dysfunction constipation
  - K59.03 Drug induced constipation
  - K59.04 Chronic idiopathic constipation
  - K59.09 Other constipation
- K59.1 Functional diarrhea
- K59.2 Neurogenic bowel, not elsewhere classified
- K59.3 Megacolon, not elsewhere classified
  - K59.31 Toxic megacolon
  - K59.39 Other megacolon
- K59.4 Anal spasm
- K59.8 Other specified functional intestinal disorders
  - K59.81 Ogilvie syndrome
  - K59.89 Other specified functional intestinal disorders
- K59.9 Functional intestinal disorder, unspecified

Other functional intestinal disorders

K60

Code hierarchy

K60 Fissure and fistula of anal and rectal regions
- K60.0 Acute anal fissure
- K60.1 Chronic anal fissure
- K60.2 Anal fissure, unspecified
- K60.3 Anal fistula
  - K60.30 Anal fistula, unspecified
  - K60.31 Anal fistula, simple
    - K60.311 Anal fistula, simple, initial
    - K60.312 Anal fistula, simple, persistent
    - K60.313 Anal fistula, simple, recurrent
    - K60.319 Anal fistula, simple, unspecified
  - K60.32 Anal fistula, complex
    - K60.321 Anal fistula, complex, initial
    - K60.322 Anal fistula, complex, persistent
    - K60.323 Anal fistula, complex, recurrent
    - K60.329 Anal fistula, complex, unspecified
- K60.4 Rectal fistula
  - K60.40 Rectal fistula, unspecified
  - K60.41 Rectal fistula, simple
    - K60.411 Rectal fistula, simple, initial
    - K60.412 Rectal fistula, simple, persistent
    - K60.413 Rectal fistula, simple, recurrent
    - K60.419 Rectal fistula, simple, unspecified
  - K60.42 Rectal fistula, complex
    - K60.421 Rectal fistula, complex, initial
    - K60.422 Rectal fistula, complex, persistent
    - K60.423 Rectal fistula, complex, recurrent
    - K60.429 Rectal fistula, complex, unspecified
- K60.5 Anorectal fistula
  - K60.50 Anorectal fistula, unspecified
  - K60.51 Anorectal fistula, simple
    - K60.511 Anorectal fistula, simple, initial
    - K60.512 Anorectal fistula, simple, persistent
    - K60.513 Anorectal fistula, simple, recurrent
    - K60.519 Anorectal fistula, simple, unspecified
  - K60.52 Anorectal fistula, complex
    - K60.521 Anorectal fistula, complex, initial
    - K60.522 Anorectal fistula, complex, persistent
    - K60.523 Anorectal fistula, complex, recurrent
    - K60.529 Anorectal fistula, complex, unspecified

Fissure and fistula of anal and rectal regions

K61

Code hierarchy

K61 Abscess of anal and rectal regions
- K61.0 Anal abscess
- K61.1 Rectal abscess
- K61.2 Anorectal abscess
- K61.3 Ischiorectal abscess
  - K61.31 Horseshoe abscess
  - K61.39 Other ischiorectal abscess
- K61.4 Intrasphincteric abscess
- K61.5 Supralevator abscess

Abscess of anal and rectal regions

K62

Code hierarchy

K62 Other diseases of anus and rectum
- K62.0 Anal polyp
- K62.1 Rectal polyp
- K62.2 Anal prolapse
- K62.3 Rectal prolapse
- K62.4 Stenosis of anus and rectum
- K62.5 Hemorrhage of anus and rectum
- K62.6 Ulcer of anus and rectum
- K62.7 Radiation proctitis
- K62.8 Other specified diseases of anus and rectum
  - K62.81 Anal sphincter tear (healed) (nontraumatic) (old)
  - K62.82 Dysplasia of anus
  - K62.89 Other specified diseases of anus and rectum
- K62.9 Disease of anus and rectum, unspecified

Other diseases of anus and rectum

K63

Code hierarchy

K63 Other diseases of intestine
- K63.0 Abscess of intestine
- K63.1 Perforation of intestine (nontraumatic)
- K63.2 Fistula of intestine
- K63.3 Ulcer of intestine
- K63.4 Enteroptosis
- K63.5 Polyp of colon
- K63.8 Other specified diseases of intestine
  - K63.81 Dieulafoy lesion of intestine
  - K63.82 Intestinal microbial overgrowth
    - K63.821 Small intestinal bacterial overgrowth
      - K63.8211 Small intestinal bacterial overgrowth, hydrogen-subtype
      - K63.8212 Small intestinal bacterial overgrowth, hydrogen sulfide-subtype
      - K63.8219 Small intestinal bacterial overgrowth, unspecified
    - K63.822 Small intestinal fungal overgrowth
    - K63.829 Intestinal methanogen overgrowth, unspecified
  - K63.89 Other specified diseases of intestine
- K63.9 Disease of intestine, unspecified

Other diseases of intestine

K64

Code hierarchy

K64 Hemorrhoids and perianal venous thrombosis
- K64.0 First degree hemorrhoids
- K64.1 Second degree hemorrhoids
- K64.2 Third degree hemorrhoids
- K64.3 Fourth degree hemorrhoids
- K64.4 Residual hemorrhoidal skin tags
- K64.5 Perianal venous thrombosis
- K64.8 Other hemorrhoids
- K64.9 Unspecified hemorrhoids

Hemorrhoids and perianal venous thrombosis

Section K55-K64 Other diseases of intestines K55-K64

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