Denials are not a new problem, but they are getting worse. MGMA's most recent benchmarking data put the single-specialty aggregate rate for claims denied on first submission at 8%, and a related MGMA Stat poll found that 60% of medical group leaders reported higher denial rates than the year before. The most commonly cited causes were insufficient documentation, patient eligibility and ID errors, untimely filing, and incorrect modifier usage.
That trend has continued. A 2026 Guidehouse and HFMA survey of healthcare finance leaders found that the share of providers reporting denial rates above 5% nearly doubled, from 12% to 20%, year over year, with 88% naming payer claim disputes as a top revenue cycle concern.
Payer rules change constantly, prior authorization requirements keep expanding, and many in-house teams simply cannot keep pace on top of their other responsibilities. That is where outsourced RCM tends to close the gap.