What modifier must the admitting provider append to the E/M code for initial hospital care?

The correct choice is the modifier that signifies that the service provided is by the admitting physician for initial hospital care. In the context of evaluation and management coding, specifically for hospital admissions, it is essential to indicate the role of the provider.

The modifier A1 indicates that the service is being billed by the admitting provider, clarifying to payers that this individual was responsible for the initial evaluation and management of the patient upon admission to the hospital.

Recording this modifier is crucial because it helps ensure appropriate reimbursement by distinguishing the admitting physician's services from those of other practitioners who may also be involved in the patient's care, such as consultants or those providing follow-up services.

Modifiers enhance specificity in billing, and using the correct one is essential for compliance with coding guidelines and to prevent claim denials. Therefore, applying this modifier accurately aligns management with payer requirements and helps to capture the full scope of care provided.