After resuscitation from a cardiopulmonary arrest, a 63-year-old man underwent percutaneous coronary intervention and was admitted to the intensive care unit. On the 14th day of hospitalization, he was weaned from the ventilator and resumed eating. Abdominal distention and pain appeared, and the patient was diagnosed with intestinal obstruction. His symptoms did not improve after placement of an ileus tube. A partial resection of the small intestine was performed on the 22nd day of hospitalization. Based on the cytomegalovirus (CMV) antigenemia assay and histopathological examination, CMV enteritis was diagnosed, and ganciclovir was initiated. The patient had diarrhea, persisting since the postoperative period, which rapidly improved and he was discharged from the hospital on day 40 of hospitalization. Although there is no clear treatment policy or prophylaxis for CMV infection in patients without immunosuppressive backgrounds, it is important to be aware of the possibility of CMV enteritis causing intestinal obstruction and requiring surgical intervention following a cardiopulmonary arrest.