The term 'Implant charges over $2,000' determines which claims and which services on that claim are reimbursed (but does not define how they are reimbursed). This is which extension?

• A. Stopping extension
• B. Selection extension
• C. Group extension
• D. Pricing extension

Answer: (B)

The key idea is about controlling which items are eligible for reimbursement rather than how the reimbursement is calculated. The phrase “implant charges over $2,000” acts as a filter that picks out claims and the specific line items on those claims that meet that threshold to be reimbursed. It doesn’t define the payment method or rate, which would be governed by a pricing extension. So this is a selection extension because it determines eligibility for reimbursement. If it were about how much is paid or how reimbursement is computed, that would be a pricing extension. The other extensions would handle different functions (stopping processing, grouping items), not determining eligibility based on a threshold.