How long is the coordination period during which a group health insurance plan remains primary for a patient qualifying for Medicare due to ESRD?

The correct duration for the coordination period during which a group health insurance plan remains primary for a patient qualifying for Medicare due to End-Stage Renal Disease (ESRD) is indeed six months. This six-month period begins with the first month of dialysis treatment. During this time, the patient's group health plan will cover claims before Medicare pays, allowing for continuity of coverage while they transition to Medicare eligibility due to ESRD.

This is an important aspect of coordination of benefits, as it ensures that patients can have comprehensive coverage during a critical health period. Following this six-month window, Medicare will take over as the primary payer, allowing the patient to rely on Medicare coverage going forward. Understanding this timeframe is essential for patient access specialists in helping patients navigate their insurance options effectively.