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 walls and. coronary circulation. The heart is located in the central-left part of the thorax (lying on the di-. aphragm) and is oriented anteriorly, with the apex directed forward, down-. ward, and leftward. The myocardium and speciï¬c conduction system are per-.