Billing & ClaimsQuestion 47 of 100
Coordination of benefits (COB) is the process used to:
a.Determine the patient's diagnosis
b.Set the provider's charge for a service
c.Determine the order in which multiple insurance plans pay when a patient has more than one coverage
d.Assign CPT modifiers
Explanation
Coordination of benefits establishes which plan is primary and which is secondary when a patient is covered by more than one policy, preventing duplicate payment beyond the total charge. The primary plan pays first, and the secondary may cover remaining allowed amounts. Correct COB prevents overpayment and reduces denials.
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