What is “COB” in medical billing?

COB in Medical Billing

COB stands for Coordination of Benefits, a process used to determine the order in which multiple insurance plans will pay claims.

COB in Medical Billing Explained

In medical billing, Coordination of Benefits (COB) is required when a patient is covered by more than one health insurance plan. COB ensures that the correct primary insurer is billed first, followed by the secondary insurer for any remaining balance. This prevents double payment for the same service and ensures that the patient’s out-of-pocket costs are minimized.

For example, a patient with two health insurance plans must have COB in place to determine which plan is responsible for paying the majority of the claim.

Learn more about common acronyms and abbreviations in Medical billing glossary.

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