How an RCC is calculated and applied
A hospital's cost-to-charge ratio is derived from its own cost report, dividing the hospital's total operating costs by its total gross charges for a given period. That ratio, usually expressed as a percentage, is then applied against the billed charges on a specific claim to estimate what the service actually cost the hospital to provide: Allowed Amount = Billed Charges × Cost-to-Charge Ratio. Because the ratio is specific to each individual hospital, the same service billed at two different facilities can produce two different allowed amounts, even under an identical state rule.
Why RCC pricing can be inconsistent across hospitals
Cost-to-charge ratios can vary significantly between hospitals depending on differences in accounting practices, service mix, and how each facility structures its chargemaster. Because the ratio is self-reported and updated on the hospital's own cost-reporting cycle, two hospitals with genuinely similar cost structures can end up with meaningfully different published ratios, which introduces variability into facility bill pricing that isn't present in more standardized methodologies like DRG- or APC-based pricing.
The incentive problem with charge-based ratios
Because RCC pricing starts from billed charges, and hospital charges (list prices, as opposed to negotiated or cost-based rates) have historically increased over time, RCC-based reimbursement can produce higher allowed amounts than a fixed fee-schedule amount would, particularly at hospitals with higher chargemaster rates relative to their actual costs. This is a well-recognized limitation of charge-based pricing methods, and it's one reason many states have moved toward standardized, grouping-based facility pricing (DRGs for inpatient stays, APCs for outpatient services) instead of relying solely on cost-to-charge ratios.
RCC vs. DRG- and APC-based facility pricing
Where a state fee schedule references Medicare's IPPS (Diagnosis-Related Groups) or OPPS (Ambulatory Payment Classifications) methodology, that grouping-based approach generally replaces RCC pricing for the covered service categories. RCC pricing tends to persist as a fallback for services, facility types, or jurisdictions the more granular grouping methodologies don't reach, which is why identifying the correct facility pricing method for a given bill, rather than assuming RCC applies by default, is an essential first step in accurate facility bill review.
How BillSentry applies RCC pricing
BillSentry automatically identifies the applicable workers' compensation reimbursement methodology and calculates the allowed amount at the bill-line level, applying the correct hospital-specific cost-to-charge ratio, or the appropriate DRG/APC methodology when one governs instead, based on the state, facility, and date of service.
Every result is documented as a RuleTrace™, showing the pricing method used, the ratio or grouping applied, and the source data behind the calculation.