________ The externship site may require the medical assistant to carry malpractice insurance

A patient with atherosclerotic heart disease experiences chest pain during exertion because the:

A. coronary arteries suddenly spasm and cause a marked reduction in myocardial blood flow. B. lumen of the coronary artery is narrowed and cannot accommodate increased blood flow. C. tissues of the myocardium undergo necrosis secondary to a prolonged absence of oxygen. D. ragged edge of a tear in the coronary artery lumen causes local blood clotting and arterial narrowing.

Use an ICD-9-CM code book to answer the following questions. Tom Jones was given a blood transfusion, and the blood was contaminated with a bacterial pyrogen. What is the correct E code?

A) E875.0 B) E875.1 C) E876.0 D) E876.1