2008 ICD-9-CM Diagnosis Code 555.9
Regional enteritis of unspecified site
- gastrointestinal disorder characterized by chronic inflammatory infiltrates, fibrosis affecting all layers of the serosa, and development of noncaseating granulomas; most common site of involvement is the terminal ileum with the colon as the second most common.
- Chronic inflammation of the gastrointestinal tract, most commonly the bowel. Crohn's disease increases the risk for colon cancer.
- A gastrointestinal disorder characterized by chronic inflammation involving all layers of the intestinal wall, noncaseating granulomas affecting the intestinal wall and regional lymph nodes, and transmural fibrosis. Crohn disease most commonly involves the terminal ileum; the colon is the second most common site of involvement. --2004
- Inflammation of the intestines, but usually only of the small intestine. Regional enteritis increases the risk for developing colon cancer. Also called Crohn's disease.
- Short description: REGIONAL ENTERITIS NOS.
- ICD-9-CM 555.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
- You are viewing the 2008 version of ICD-9-CM 555.9.
- More recent version(s) of ICD-9-CM 555.9: 2009 2010 2011 2012 2013.
555.9 Alternative Terminology
Applies To
Convert 555.9 to ICD-10-CM 
ICD-9-CM Volume 2 Index entries containing back-references to 555.9:
Crohn's (intestine) (see also Enteritis, regional) 
regional (of) 
