Chapter XI

Diseases of the digestive system
(K00-K93)

Noninfective enteritis and colitis
(K50-K52)


Includes:	noninfective inflammatory bowel disease
Excludes:	irritable bowel syndrome ( K58.- ) megacolon ( K59.3 )


K50		Crohn's disease [regional enteritis]
		Includes:	granulomatous enteritis
		Excludes:	ulcerative colitis ( K51.- )
K50.0		Crohn's disease of small intestine
		Crohn's disease [regional enteritis] of: · duodenum · ileum · jejunum Ileitis: · regional · terminal
		Excludes:	with Crohn's disease of large intestine ( K50.8 )
K50.1		Crohn's disease of large intestine
		Colitis: · granulomatous · regional Crohn's disease [regional enteritis] of: · colon · large bowel · rectum
		Excludes:	with Crohn's disease of small intestine ( K50.8 )
K50.8		Other Crohn's disease
		Crohn's disease of both small and large intestine
K50.9		Crohn's disease, unspecified
		Regional enteritis NOS


K51		Ulcerative colitis
K51.0		Ulcerative (chronic) enterocolitis
K51.1		Ulcerative (chronic) ileocolitis
K51.2		Ulcerative (chronic) proctitis
K51.3		Ulcerative (chronic) rectosigmoiditis
K51.4		Pseudopolyposis of colon
K51.5		Mucosal proctocolitis
K51.8		Other ulcerative colitis
K51.9		Ulcerative colitis, unspecified
		Ulcerative enteritis NOS


K52		Other noninfective gastroenteritis and colitis
K52.0		Gastroenteritis and colitis due to radiation
K52.1		Toxic gastroenteritis and colitis
		Use additional external cause code (Chapter XX), if desired, to identify toxic agent.
K52.2		Allergic and dietetic gastroenteritis and colitis
		Food hypersensitivity gastroenteritis or colitis
K52.8		Other specified noninfective gastroenteritis and colitis
		Eosinophilic gastritis or gastroenteritis
K52.9		Noninfective gastroenteritis and colitis, unspecified
		Diarrhoea Enteritis Ileitis Jejunitis Sigmoiditis				} } } } }	specified as noninfective, or NOS in countries where the conditions can be presumed to be of noninfectious origin
		Excludes:	colitis, diarrhoea, enteritis, gastroenteritis: · infectious ( A09 ) · unspecified, in countries where the condition can be presumed to be of infectious origin ( A09 ) functional diarrhoea ( K59.1 ) neonatal diarrhoea (noninfective) ( P78.3 ) psychogenic diarrhoea ( F45.3 )