I97: Postprocedural disorders of circulatory system, not elsewhere classified

I97.9: Postprocedural disorder of circulatory system, unspecified

The heart pumps the blood through the blood vessels to the body. Then the blood flows back to the heart. This is called the circulatory system or bloodstream. Blood supplies oxygen and nutrients to the tissue in the body.

When someone has circulatory problems, there can be various symptoms. For example, one may have low blood pressure. Then one sometimes feels dizzy or has a blackout.