Which entity processes all Part A and B Medicare claims for a given region?

Which entity processes all Part A and B Medicare claims for a given region?

• A. Medicare Administrative Contractors (MACs)
• B. Fiscal Intermediaries
• C. Providers' Processing Units
• D. Health Insurance Carriers

Answer: (A)

Medicare Administrative Contractors are the organizations contracted by CMS to process and pay all Medicare Part A and Part B claims within a defined region. They adjudicate claims, determine coverage and eligibility, apply the rules for deductibles and coinsurance, and issue payments to providers. They also handle provider enrollment and maintain the Medicare provider file, ensuring consistent claim processing across the region. Historically, claim processing came with split responsibilities—fiscal intermediaries handled some Part A tasks and carriers handled Part B—but today MACs administer both parts in their region, giving a single, unified processing pathway. The other options don’t serve as the regional processing entity for all Part A and B claims under current Medicare structure.

Medicare Administrative Contractors are the organizations contracted by CMS to process and pay all Medicare Part A and Part B claims within a defined region. They adjudicate claims, determine coverage and eligibility, apply the rules for deductibles and coinsurance, and issue payments to providers. They also handle provider enrollment and maintain the Medicare provider file, ensuring consistent claim processing across the region.

Historically, claim processing came with split responsibilities—fiscal intermediaries handled some Part A tasks and carriers handled Part B—but today MACs administer both parts in their region, giving a single, unified processing pathway. The other options don’t serve as the regional processing entity for all Part A and B claims under current Medicare structure.