Take the challenge. A—The commercial insurance coverage is primary in this situation. Medicare should be billed secondarily because it will not become primary until after the first 30 months of ESRD Medicare entitlement. After that, Medicare will be primary no matter the patient’s employment status. C—Unless the patient has a qualifying condition, such as ESRD,…

A 55-year-old male patient diagnosed with generalized osteoarthritis and diagnosed with end stage renal failure (ESRD) 20 months previously presents to the office to see the rheumatologist. The patient has a commercial insurance plan and Medicare. Which carrier is primary for this visit? Commercial insurance carrier Medicare You do not know because it is not…