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Montana’s rural labs face a sharp threat from PAMA-driven CLFS cuts of up to 15% on nearly 800 codes starting January 1, 2027. Unlike high‑volume reference labs, critical access hospitals can’t offset lower rates with more tests, making revenue loss acute. Compounding the challenge, reference lab billing rules require precise modifier 90 use and current CLIA documentation, with physician‑practice claims automatically denied.
Key protective steps include auditing the test mix for affected codes, evaluating whether Method II billing can boost professional fee capture, and tightening reference lab compliance. Tracking the RESULTS Act’s progress offers possible long‑term relief. Partnering with a Montana lab billing company, like TransLabs, implements these strategies into daily operations as experts monitor regulatory updates, manage proper modifier application, and ensure CAH claims stay clean. That proactive support preserves revenue and lets lab teams concentrate on serving patients across the state’s frontier communities.
The Protecting Access to Medicare Act (PAMA) reporting is looming as a dark cloud over laboratories. On January 1, 2027, the Clinical Laboratory Fee Schedule (CLFS) could drop by as much as 15% on nearly 800 test codes under the PAMA 2027 rate cuts. For a big national reference lab, that’s just a rounding error. But for a critical access hospital lab in Miles City or Glasgow, it’s crucial for survival.
However, the good news for your rural Montana lab is that you’ve got plenty of time to prepare. Moreover, Montana’s critical access hospital (CAH) network already has some built-in protections that most labs elsewhere don’t.
So, let’s discuss what the new rules have in store for you and how using Montana laboratory billing services helps protect your revenue.
Big commercial labs can absorb a rate cut by leaning on volume. Rural community labs don’t have that relief. Montana’s geography alone makes this tougher.
This example explains this perfectly. A lab in a metro area might run thousands of basic metabolic panels a week. A CAH lab in a frontier county might run a few dozen, serving patients who would otherwise drive two hours for a blood draw. When Medicare payment per test drops, that lab doesn’t get to make it up on volume. It just eats the loss, or it stops offering certain tests altogether.
By keeping that in mind, the American Clinical Laboratory Association’s Stop Lab Cuts campaign has flagged how repeated CLFS reductions threaten timely access to testing for conditions like chronic kidney disease, HIV, and Hepatitis. It’s exactly the chronic disease monitoring rural patients rely on locally.
While advocacy is there, these cuts are destined to happen, for now. So, what’s the relief for Montana’s rural labs, here?
The RESULTS Act, if signed into law, would overhaul how CMS collects and applies payer data. It’s sponsored by lawmakers from both parties, including Representatives Richard Hudson and Raja Krishnamoorthi in the House and Senators Thom Tillis and Raphael Warnock in the Senate.
It benefits Montana labs by:
The last point here is the most important for a small CAH lab without a dedicated compliance team. Less paperwork gives more time for patient care.
Now, if you’re wondering about its possibilities, the bill has cleared a House Energy and Commerce subcommittee hearing with clear bipartisan support as of mid-2026, though it hasn’t been signed into law. Labs shouldn’t bank on it passing before the 2027 deadline. Plan for the cuts, and treat the RESULTS Act as a possible reprieve, not a guarantee.
Most of the state’s rural hospitals are licensed as Critical Access Hospitals, and that status comes with a billing structure that sidesteps the worst of the CLFS payment cuts.
The thing is that CAHs are generally reimbursed at 101% of reasonable cost rather than the standard fee schedule, at least for services billed under the cost-based methodology. That’s a fundamentally different payment model than the CLFS rates independent and hospital outreach labs depend on.
There are two methods for Montana CAH billing, described in the table below:
| Feature | Method I | Method II |
|---|---|---|
| Facility payment | 101% of reasonable cost | 101% of reasonable cost |
| Professional services | Billed separately by physician (Part B) | Billed by the CAH itself, at 115% of the fee schedule amount |
| Best fit for | CAHs without strong in-house billing staff | CAHs wanting to capture more of the professional fee |
Montana Healthcare Programs (Medicaid) allows outpatient hospitals and CAHs to bill for lab work they send out to a reference lab, but only if they append modifier 90 and confirm the reference lab’s CLIA certification is current for the date of service.
This lab billing rule applies to hospitals and CAHs, not to physicians, mid-levels, or group clinics. Montana Medicaid doesn’t reimburse physician practices for reference lab services, even with modifier 90 attached. The state’s claims system is set up to automatically deny those lines. If your practice bills professional claims and you’re appending modifier 90 hoping for payment, that claim is on the way to getting denied.
Solution: Route reference lab work through the CAH’s facility claim, not the physician’s professional claim, and double-check CLIA status before every submission.
Pull a report of your top-billed CLFS codes with lab billing audit services, and flag which ones fall in the roughly 800 tests slated for potential cuts.
Assign someone, even part-time, such as lab billing partners like TransLabs, to monitor legislative movement, so you’re prepared whenever a new law is signed. These partners not only keep an eye on legislative updates across The Treasure State, but implement them in your billing processes, so your claims are processed smoothly.