In-house vs outsourced billing for physical therapy clinics

Most PT clinics start with billing in-house. The owner handles it, then the front desk, then a part-time biller, then maybe a full-time one. At some point the question comes up: is this still working, or should someone else do it?

There’s no single right answer. But there are clear signs for each side, and PT billing has a few traps that make the decision matter more than it does in many other specialties.

Why PT billing is harder than it looks

A typical PT visit has several timed services, therapy modifiers and a plan of care behind it. Each one is a place where a claim can be underpaid or denied.

• Timed codes. Medicare, and payers that follow its rules, use the 8-minute rule to turn total timed minutes into units. Bill each service on its own minutes and you can overbill or underbill. Our 8-minute rule guide walks through examples.
• Therapy modifiers. GP on every therapy line, CQ for services by a PTA, KX once a Medicare patient passes the annual threshold, and 59 or X modifiers when code pairs trigger edits.
• Visit limits and authorizations. Commercial plans cap visits per year, and many require authorizations that run out mid-plan.
• Plans of care. Medicare needs a certified plan of care and regular progress reports. A missing signature turns into a denial weeks later.

None of this is unusual for an experienced PT biller. The trouble starts when billing is someone’s second job.

The case for keeping billing in-house

• Control. Your biller sits down the hall and knows your patients and your therapists.
• Quick fixes. A missing modifier can be corrected the same day.
• It can work well if you have an experienced PT biller, enough volume to keep them busy, and someone who can cover when they’re out.

The case for outsourcing

• Cost. A billing company paid a percentage of collections usually costs less than a full-time biller once salary, taxes, benefits and software are added up. Here’s a breakdown of what medical billing costs.
• No single point of failure. When an in-house biller is sick, on vacation or leaves, claims stop going out. A team doesn’t stop.
• Denials actually get worked. In busy clinics, denials pile up because nobody has time. A dedicated team follows each one to a final answer.
• Specialty depth. A company billing PT for many clinics notices payer rule changes early, before they show up as denials in your clinic.

Signs it’s time to outsource

• Your AR over 90 days keeps growing.
• The same denials show up month after month: bundling, benefit maximums, missing authorizations.
• Your front desk is doing eligibility, scheduling and billing at the same time.
• You can’t easily answer the question “how much are we owed right now?”
• Billing falls behind whenever one person is away.

If two or three of these sound familiar, billing is probably costing you more than it should.

The middle option: a hybrid

Outsourcing doesn’t have to be all or nothing. Many clinics keep check-in, copays and scheduling in-house and hand off the back end: claims, payment posting, denials and follow-up. Some start by outsourcing only their old AR, to see how a company works before trusting it with everything. You can also add a medical virtual assistant for scheduling and insurance checks while a billing team handles the claims.

What to ask a PT billing company

1. How do you apply the 8-minute rule, and how do you handle payers that don’t follow it?
2. How do you track visit limits, authorizations and the KX threshold?
3. Do you work inside our EMR, such as WebPT or Prompt, or do we have to switch?
4. What does your monthly report show about denials?
5. What does it cost, and is there a setup fee or a long contract?

How switching works

A good billing company should make switching close to invisible for your staff. With us it usually takes about two weeks: a free claims review, a signed BAA, access to your EMR and clearinghouse, and then claims go out daily while we start on your old denials. Your therapists keep seeing patients the whole time. More on our physical therapy billing page.

Related: Physical therapy billing · The 8-minute rule