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.
What is the function of the myocardium? A: According to About.com, the primary function of the myocardium is to stimulate heart contractions and relaxation. Contractions of the heart allow pumping of blood from the ventricles, and relaxation makes it possible for the atria to receive blood.