Western PT Revenue Group

The Situation

Western PT Revenue Group handled billing for 14 outpatient physical therapy practices across the Southwest. Annual collections were $2.4M. The owner had come from a clinical background and built the billing operation herself over eight years. She understood billing. What she could not get under control was days in AR, which had climbed steadily from 38 days three years earlier to 58 days at the time of engagement.

At 58 days in AR, the business was carrying roughly $381,000 in outstanding receivable at any given time. Clients were beginning to ask questions about payment timing. Two practices had requested reports on their denial rates. The owner could not produce them because the data was not being tracked at that level. She knew the overall collection rate. She did not know where the delays were occurring or which payers were the source.

The workers compensation mix was a significant contributing factor that had not been isolated. Workers comp claims in PT billing operate under state-specific fee schedules and have distinct documentation requirements from commercial or Medicare billing. The team was processing workers comp claims through the same workflow as commercial claims, generating documentation deficiency denials at a rate more than twice the commercial average.

What Was Breaking

The audit produced a payer-level breakdown of days in AR for the first time. Three commercial payers accounted for 67% of the AR delay. Two of them had average adjudication times of 31 to 34 days when claims were clean. The same payers were averaging 54 to 61 days on claims from Western PT accounts, which indicated systematic submission problems rather than payer processing delays.

The root cause was a clean claim rate problem. Western PT Revenue Group was submitting claims with a first-pass acceptance rate of 81%. Industry top performers sustain 97% or higher. The 16-point gap represented claims being returned from the clearinghouse or payer for corrections before entering the adjudication queue. Each return added an average of 14 days to the adjudication timeline. Across monthly claim volume, that cycle time drag was the primary engine behind the 58-day AR average.

The $210,000 in annual write-offs traced primarily to two sources: workers comp claims where documentation did not meet state-specific requirements and could not be appealed after denial, and commercial claims that had been resubmitted past timely filing limits after sitting unworked in the clearinghouse rejection queue for more than 30 days.

The Build

The clean claim rate was the primary target. Mirlo Systems built a pre-submission validation layer that scrubbed every claim against the specific rejection rules for each payer before the claim left the billing system. Clearinghouse rejections dropped by 74% in the first 30 days. The first-pass acceptance rate moved from 81% to 96.2% within 60 days of implementation.

A separate workers comp workflow was built with state-specific documentation checklists for each state in their coverage area. Workers comp claims were routed through a documentation completeness check before submission that validated against the relevant state fee schedule documentation requirements. Workers comp denial rates dropped from 22% to 6% within the first billing cycle after the new workflow went live.

The clearinghouse rejection queue was given an automatic alert system: any claim sitting in rejection status for more than 48 hours without a correction action triggered an escalation. The backlog of unworked rejections that had been accumulating and aging was cleared within three weeks. No further claims were lost to timely filing from clearinghouse queue inaction.

A payer-level performance report was deployed for the owner showing days in AR by payer, clean claim rate by payer, and denial rate by payer and reason code. For the first time she could show clients their specific billing performance data. The two practices that had been asking for denial reports received branded performance reports within 30 days of implementation. Both renewed their contracts that quarter.