What PT Practices Should Check Before Outsourcing Billing

Physical therapy practices face a unique combination of billing challenges. Multiple units per visit require accurate time tracking and modifier application. Prior authorization requirements vary by payer and often have visit limits that must be tracked in real time. Functional limitation reporting codes must be included on claims or they will be denied. The 8-minute rule for time-based codes creates a constant source of coding errors. And many payers have therapy-specific policies that differ from their general medical billing rules. A single missed modifier or expired authorization can turn a $150 session into $0 collected.

No free primary source publishes a denial rate for physical therapy claims, and this page does not quote one — nor a dollar figure for what those denials cost, because that number is practice-specific and your own denial report is the only place it exists. The arithmetic worth running is yours: visits per day, times working days, times your average allowed amount per visit, times the share of those visits denied for authorization or unit-math reasons. What is not practice-specific is which denials hurt most. Authorization-related denials are the expensive ones because they usually involve multiple sessions that were rendered and cannot be billed, and they compound: unworked denials age past appeal deadlines, authorization gaps generate cascading denials across multiple visits, and coding errors trigger payer audits that can result in recoupment demands.

Before signing with a billing company, audit five areas of your current billing: First, pull your denial report by reason code — if authorization denials or modifier errors are in your top five, those are process problems a billing company should fix immediately. Second, check your A/R aging — what share of your receivables sits past 90 days, and whether that share has grown over the last twelve months; the trend is the signal, and no free primary source publishes a target share for the 90-plus bucket. Third, review your clean claim rate; no free primary source publishes a target value for it either, so measure it against your own trailing twelve months rather than against a number you read somewhere. Fourth, verify your coding accuracy by comparing documented time to billed units across a sample of visits. Fifth, confirm all providers are credentialed with every payer you bill. These five data points tell you exactly where your revenue is leaking and what your billing service needs to fix first.

A competent PT billing service should complete a full claims and credentialing audit in week one, begin working your aged A/R backlog in week two, implement authorization tracking and verification workflows in weeks two through three, and establish real-time KPI monitoring by week four. MedPrecision's physical therapy billing services handle the 8-minute rule, modifier requirements, Medicare therapy threshold tracking, and payer-specific authorization workflows as standard — because those are where PT practices lose the most money.

Not every billing company understands PT-specific requirements. Ask these questions: How do you handle the 8-minute rule for time-based codes? What is your process for tracking the Medicare therapy threshold — $2,480 for CY 2026 — and authorization visit limits? How do you manage functional limitation reporting requirements? What is your denial rate for PT claims specifically? Can you provide references from other PT practices? If the answers are vague or generic, the company does not have the specialty expertise your practice needs.