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tear of anal sphincter (S31.831)

K62.82 Dysplasia of anus

Anal intraepithelial neoplasia I and II (AIN I and II) (histologically confirmed)

Dysplasia of anus NOS

Mild and moderate dysplasia of anus (histologically confirmed)

Excludes1: abnormal results from anal cytologic examination without histologic confirmation (R85.61-)

anal intraepithelial neoplasia III (D01.3)

carcinoma in situ of anus (D01.3)

HGSIL of anus (R85.613)

severe dysplasia of anus (D01.3)

K62.89 Other specified diseases of anus and rectum

Proctitis NOS

K62.9 Disease of anus and rectum, unspecified

K63 Other diseases of intestine

K63.0 Abscess of intestine

Excludes1: abscess of intestine with Crohn's disease (K50.04, K50.14, K50.84, K50.94,)

abscess of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8)

abscess of intestine with ulcerative colitis (K51.04, K51.14, K51.24, K51.34, K51.44, K51.54, K51.84, K51.94)

Excludes2: abscess of anal and rectal regions (K61.-)

abscess of appendix (K35.2)

K63.1 Perforation of intestine (nontraumatic)

Perforation (nontraumatic) of rectum

Excludes1: perforation (nontraumatic) of duodenum (K26.-)

perforation (nontraumatic) of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8)

Excludes2: perforation (nontraumatic) of appendix (K35.2, K35.3)

K63.2 Fistula of intestine

Excludes1: fistula of duodenum (K31.6)

fistula of intestine with Crohn?s disease (K50.03, K50.13, K50.83, K50.93,)

fistula of intestine with ulcerative colitis (K51.03, K51.13, K51.23, K51.33, K51.43, K51.53, K51.83, K51.93)

Excludes2: fistula of anal and rectal regions (K60.-)

fistula of appendix (K38.3)

intestinal-genital fistula, female (N82.2-N82.4)

vesicointestinal fistula (N32.1)

K63.3 Ulcer of intestine

Primary ulcer of small intestine

Excludes1: duodenal ulcer (K26.-)

gastrointestinal