Final answer:
Modifier 26 affects the reimbursement for radiology services by decreasing it, as it indicates that only the professional component of the service (interpreted by a physician) is being billed for, not the technical component.
Step-by-step explanation:
The modifier 26 is used in medical billing to denote the Professional Component of a service that has both a technical and professional part. Specifically, for radiology services, the use of modifier 26 signifies that payment is being requested only for the professional component, which includes the supervision, interpretation, and report of the radiological procedure by a physician.Applying modifier 26 will decrease the reimbursement from the insurance carrier compared to the full service charge. This is because when modifier 26 is applied, reimbursement is provided only for the professional services and not for the technical component, which includes the cost of equipment, supplies, and technical staff. Therefore, when radiology services are billed with modifier 26, the reimbursement reflects only the physician's interpretation and not the cost of actually performing the test.When a facility provides the technical component, they will bill separately using the appropriate code for the technical part (often with the TC modifier). Meanwhile, the physician or practitioner interpreting the radiograph will bill with modifier 26 for their professional services.