Why is accurate date of service and place of service coding important?

• A. To apply the correct coverage, billing rules, and to avoid denials or underpayment.
• B. To confuse the payer.
• C. To ensure the dates are all within one month.
• D. To maximize patient out-of-pocket costs.

Answer: (A)

Dates of service and place of service coding determine whether a claim is billed under the correct policy terms and paid correctly. The date of service links the encounter to the patient’s coverage window, eligibility, and payer rules about timely filing; if the date is wrong or falls outside the covered period, the payer may deny or underpay the claim. The place of service indicates where the service happened (office, hospital, outpatient department, etc.), which changes whether charges are billed as professional or facility services and which rate or billing rules apply. Getting both right ensures the service is evaluated under the right payment rules and reduces the chance of denials or underpayment, while maintaining accurate, compliant documentation.