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 myocardium (cardiac muscle), is the thickest section of the heart wall and contains cardiomyocytes, the contractile cell of the heart. Describe myocardial thickness and function in the heart. Coordinated contraction of cardiomyocytes causes the heart to contract and expel blood into circulation.