The sequence in which procedures are coded can affect reimbursement as it may result in underpayment. When a less important procedure is coded before others, the payer may apply a multiple procedure payment reduction, leading to reduced payment. In instances where two surgeries are performed simultaneously, some coders prioritize coding the less expensive procedure first. Consequently, the payer may decrease the payment for the more expensive procedure. This highlights the significance of carefully determining the order of coding procedures to ensure accurate reimbursement.