How does prior authorization affect revenue?

Prior auth creates revenue impact across four dimensions. First, denials: Change Healthcare reports prior auth-related denials at 10 to 15 percent of all denials, often unrecoverable because the service was already provided without approval. Second, delay: average prior auth turnaround is 5 to 14 days; complex requests take 30+ days, creating revenue lag and patient access issues. Third, administrative cost: Per the 2023 CAQH Index, manual prior authorization costs providers approximately $10.97 per transaction; electronic transactions cost approximately $5.79 per transaction (provider-side costs). Most practices still process prior auth manually because payer electronic systems are inconsistent. Fourth, physician time: the December 2024 AMA Prior Authorization Physician Survey reports physicians complete an average of 39 prior authorizations per week and spend approximately 13 hours per week on prior auth-related work, equivalent to lost clinical revenue. Mitigation strategies include: building specialty-specific prior auth lists by payer, securing prior auth before scheduling (not after), using electronic submission where available, tracking denial reason codes specifically for prior auth, and escalating systemic payer issues to provider relations. CMS finalized rules in 2024 requiring Medicare Advantage and ACA plans to streamline prior auth and respond within 72 hours for urgent and 7 days for standard requests, effective in 2026.