1 ICD-9-CM 751.7 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 751.7 should only be used for claims with a date of service on or before September 30, 2015. 2  For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
The myocardium is located between the endocardium and the visceral layer of the serous membrane (epicardium) of the heart.
The heart is located under the rib cage between the lungs, with slightly more to the left of midline than the right. The human heart, which is normally about the size of your fist, is located behind and to the left of your breastbone, also called the sternum. Watch this animation to learn more about your heart and how it works. right behind your ribcage & a little to the left in the center of your body. The heart lies within the thorax in the body. This location is called the mediastinum. The heart is about the size of your fist and is located sub-sternal, center thoracic, superior to the stomach with the apex on the left.