What is the main purpose of precertification in outpatient billing?

• A. To determine coverage and medical necessity before service
• B. To finalize payment after service
• C. To schedule appointments
• D. To determine deductible amount

Answer: (A)

Precertification is used to verify that a planned outpatient service is covered by the patient’s health plan and medically necessary before the service is performed. This gives the payer a chance to review the clinical information, approve the procedure, and confirm that it meets plan criteria and the correct codes. It helps the provider secure payment and aligns the service with coverage rules and patient cost sharing, reducing the risk of post-service claim denials or reductions due to noncoverage or lack of medical necessity. It’s not about the final payment after the service, which happens after claim submission and adjudication; it’s also not primarily for scheduling, though some plans may use it to flag authorization needs and related requirements.