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 in the center of the chest, behind the sternum. In this video, Rakesh Jain, MD, an interventional cardiologist at Chippenham & Johnston-Willis Hospitals, describes both the location and size of the average human heart.he heart lies underneath the sternum, or chest bone, and sits a little to the left. The heart is located between the lungs and lies in front of the backbone. It is about the size of a fist. (This answer provided for NATA by the University of Montana Athletic Training Education Program.).