Physical Therapy Billing That Pays What You Earn
Physical therapy billing is time-based, units-based, and subject to Medicare therapy cap management, functional limitation reporting, and constant functional maintenance vs. skilled therapy documentation scrutiny. The KX modifier, Medicare G-codes, and the 8-minute rule govern the vast majority of PT billing — and errors in any of these cost practices on every patient, every visit. 360Solutions provides PT billing specialists who apply the 8-minute rule precisely, track therapy thresholds, and keep your claims audit-ready.
Where Physical Therapy Practices Lose Revenue
These are the coding and billing pitfalls that cost physical therapy practices the most — and where our specialised billers add the most value.
The 8-Minute Rule
Medicare's 8-minute rule requires at least 8 minutes of a timed service to bill one unit, with additional units earned at each 15-minute increment. Calculating units from total timed service minutes requires specialty knowledge — and errors compound across hundreds of visits.
KX Modifier & Therapy Caps
The Medicare therapy threshold requires the KX modifier to be applied once the patient's annual expenditure exceeds the soft threshold. Missing KX on qualifying visits results in automatic denial. We track each patient's annual PT spend and apply KX proactively.
Medical Necessity Documentation
Payers increasingly require functional improvement documentation to justify continued PT. Claims without objective outcome measure data (range of motion, strength grades, functional scores) face retrospective denial. We audit documentation before billing each episode.
Bundling with Physician Visits
PT services billed on the same day as an orthopedic or primary care visit face automatic bundling by most payers. Modifier -59 is required with documentation that services were separate and distinct. We apply this correctly to prevent recurring denials.
High-Risk CPT Groups
Code ranges payers audit most aggressively in Physical Therapy.
Common Denial Patterns
Knowing these before submission is the difference between a 60% and a 96% first-pass rate.
8-minute rule units calculated incorrectly from total timed minutes
KX modifier omitted when patient's annual therapy spend exceeds CMS threshold
Non-timed (untimed) codes billed in multiple units instead of one unit per visit
PT visit billed same day as orthopedic visit without modifier -59
Functional maintenance therapy billed without documentation that skilled care is required
Send us your last 90 days of remittance data — we'll identify your top 3 fixable denial sources at no cost.
Request Free Audit →How 360Solutions Works for Physical Therapy Practices
Free 2-Week Billing Audit
We review your last 90 days: denial breakdown by category, AR aging by payer, charge lag, collection rate, and any recurring coding issues specific to your specialty. No commitment required.
Specialty Coder Assignment
You are paired with a coder trained specifically in physical therapy coding. They learn your providers, your documentation patterns, and your payer mix before touching a claim.
Parallel Billing Transition
We run alongside your current billing for 10–14 days with zero cash flow disruption. Claims keep moving during the transition. Your account manager provides daily status updates.
Live KPI Dashboard
Real-time visibility into billed, paid, denied, AR aging, and collection rate — segmented by provider and payer. No black box, no month-end surprises.
Weekly Account Manager Call
Every week your dedicated account manager walks through last week's KPIs, denial trends, and any action items. Critical issues are escalated the same day — not at the next scheduled call.
Questions From Physical Therapy Practices
Start With a Free,
No-Obligation Audit
Two weeks, no contract. A certified physical therapy billing specialist reviews your claims, denial patterns, and AR — and shows you exactly what is recoverable.