The multiple procedure code Modifier 51, causes some confusion among medical billing professionals because it relates to multiple procedures performed but what many medical coders miss is the fact it only applies to multiple procedures performed by physicians and imaging centers. Using this modifier can get your claim denied and cause a large delay in receiving reimbursements. Carriers already assume during a hospital stay that multiple procedures will already be performed therefore designation of the exact nature and type of services rendered by the attending physician will still suffice for hospital medical billing claims. The CPT manual designates modifier 51 (Multiple procedures) exempt codes with a “circle with a slash” …