Endoscopic Exams

Endoscopic examinations of the intestines are classified to these four groups; proctosigmoidoscopy, sigmoidoscopy, colonoscopy, and colonoscopy through stoma.

Proctosigmoidoscopy (45300-45357) is an examination of the rectum and may include portion of the sigmoid.

Sigmoidoscopy (45330-45350) examination to the sigmoid which may include portion of the descending colon.

Colonoscopy (45378-45398) examination is the entire intestine to the cecum.  It may include the terminal ileum or small intestine if the patient has an anastomosis.

Endoscopy through a stoma (44380-44408) is examination of intestine through an appliance.

When a symptomatic patient or patient with a known current disease process presents for an examination that does not involve definitive treatment of disease, it is reported as the ‘diagnostic’ exam in the code.


44380 – Ileoscopy, through stoma; diagnostic, including collection of specimen

45378 – Colonoscopy, flexible; diagnostic, including specimen collection by brushing or washing

ICD-10-PCS for screening or diagnostic exams

Inspection of Lower intestinal tract, via natural or artificial opening endoscopic