What the proposed rule actually says
On July 14, 2026, CMS released the Calendar Year 2027 Medicare Physician Fee Schedule proposed rule. The headline for physicians is another drop in the conversion factor — the single dollar multiplier that converts every relative value unit (RVU) into a payment. For clinicians who are not qualifying Alternative Payment Model (APM) participants, the proposed 2027 factor is $32.84, a decrease of $0.56 or 1.68% from the 2026 rate of $33.40. For qualifying APM participants it falls to $33.17, down $0.40 or 1.19%.
Because the conversion factor is a flat multiplier, a cut here flows straight through the professional (reading) component of every imaging code — the part a radiologist earns for interpreting the study and producing the report. The reaction from procedural specialties was sharp: the Society of Interventional Radiology urged members to "act immediately to halt this devastating proposal," a characterization Radiology Business carried in its coverage. The rule is a proposal, open to public comment through September 14, 2026, so the final numbers can shift.
But the conversion factor is not the whole story — and it is important not to read the headline cut as an overall cut to radiology. In its own impact estimates for the 2027 proposed rule, CMS projects a net +2% overall impact for radiology (roughly +2% for nuclear medicine, +3% for interventional radiology, and +3% for radiation oncology), because proposed practice-expense and other RVU changes more than offset the conversion-factor reduction, and the negative efficiency adjustment does not apply to the technical component. The ACR's own read of the proposal — "Proposal Indicates Overall Positive Updates for Radiology" — reflects the same conclusion. The durable pressure is structural: the conversion factor that sets revenue per study keeps eroding year over year, even in a year the specialty nets out ahead.
Why the factor is falling
Most of the 2027 decrease is not a new cut — it is the expiration of a temporary one. Congress attached a 2.50% increase to the conversion factor for 2026 alone, and that bump simply is not in effect for 2027. It outweighs the modest statutory updates for the new year (0.75% for qualifying APM participants, 0.25% for everyone else) plus a 0.53% adjustment CMS proposes to account for changes in work RVUs. The arithmetic nets out to a decrease.
This is the recurring pattern radiology has lived with for years: a temporary patch props up the factor for twelve months, then lapses, and the baseline resets lower. The American College of Radiology and other physician groups have repeatedly urged Congress to replace the cycle with a stable, inflation-linked update. Until that happens, planning around a flat or rising conversion factor is planning around an exception, not the rule.
The efficiency adjustment still hangs over imaging
Layered on top of the conversion factor is the "efficiency adjustment" CMS finalized in the 2026 final rule — a negative 2.5% applied to the work RVUs of most services that are not billed based on time, on the theory that productivity has risen as technology and workflows improve. Diagnostic imaging and many procedural radiology services are not time-based, so their work RVUs sit inside the adjustment's scope. Importantly, it applies to the work component only — not to the technical component — which is part of why radiology still nets out positive overall in 2027. CMS has said it plans to recalculate the efficiency adjustment every three years, meaning the next reset is not due until 2029, so the reduction carries into the 2027 work values.
Radiology organizations have pushed back on the premise. The ACR has argued that any efficiencies CMS theorizes are outweighed by the growing number of images and reconstructions now generated per study — a modern CT or MRI produces far more to interpret than the volumes those RVUs were originally built on. It is worth being precise about the year-over-year direction here: under the earlier 2026 final rule, CMS estimated an overall impact of roughly −2% for radiology and −1% for nuclear medicine, with interventional radiology closer to +2%. That was the prior-year outlook. For the 2027 proposed rule, CMS's estimate flips positive overall (about +2% for radiology), so the two years should not be conflated — the efficiency adjustment weighs on specific work values without dragging the specialty's overall estimate negative for 2027.
This is the professional fee — not the site-neutral story
It is worth separating two policy tracks that often get blurred. The Physician Fee Schedule governs the professional component — what the radiologist earns for the read. A separate proposed rule, the Hospital Outpatient Prospective Payment System, governs facility payments; that is where the proposed site-neutral imaging cuts live. A hospital-affiliated imaging department can feel both at once, from different directions. This article is strictly about the reading fee. Both tracks, though, point at the same operational conclusion: when the payment attached to a study shrinks, the number of studies a group can accurately read per radiologist-hour becomes the variable that decides margin.
Why "hire more radiologists" is the wrong first move
The instinctive answer to falling per-study pay is volume: read more studies to make up the difference. But if each study takes the same radiologist-minutes as before, more volume means more radiologists — and radiologists are the scarcest, most expensive input a group has. Job listings increasingly omit salary in a supply-constrained market, and the shortage is projected to widen through the decade. Solving a reimbursement cut by expanding the most cost-inflated line item just relocates the margin problem.
The durable lever is throughput economics: reading more studies per radiologist-hour without proportionally growing headcount. A specialty can net out positive in a single year and still watch the conversion factor — the dollar value behind each read — erode over the longer run. If a radiologist can accurately clear meaningfully more studies in the same hour, revenue-per-hour holds — or rises — even as revenue-per-study drifts down. That is the response that scales when the payment curve keeps bending down.
Two ways to answer a reimbursement cut
| Add headcount / volume | Add throughput (AI-drafted reports) | |
|---|---|---|
| Cost driver | Scales with the scarcest, priciest input | Per-study software cost, no new salaries |
| Revenue-per-study | Still falls with the fee schedule | Still falls — but offset by more reads/hour |
| Time to effect | Months to recruit in a shortage | DICOM integration in about a week |
| Accountability | Radiologist reads and signs | AI drafts; your radiologist signs |
Where AI-drafted structured reports fit
A structured, comprehensive AI draft changes the unit economics of the read itself. Instead of dictating each study from a blank page, the radiologist opens a complete, ready-to-sign report — findings organized, measurements populated, normal structures accounted for — and works as an editor and verifier. That is a fundamentally faster motion than authoring from scratch, and it is why a foundation-model approach that produces one complete draft matters more here than a stack of narrow detectors that each flag a single finding but still leave the report unwritten.
Accountability does not move. With xAID, the AI produces the preliminary draft, an in-house European radiologist reviews every preliminary, and the report is delivered ready to sign — the client's reading radiologist signs the final. What changes is the minutes-per-study, and in a world where the payment per study keeps ratcheting down, minutes-per-study is the number that decides whether the margin math works. Groups weighing the trade can start from the full coverage-cost comparison before committing.
Frequently asked questions
Does the 2027 Medicare Physician Fee Schedule cut radiology payments?
The headline conversion factor falls. In the proposed CY 2027 Medicare Physician Fee Schedule, released July 14, 2026, the conversion factor for clinicians who are not qualifying APM participants drops to $32.84, a decrease of $0.56 or 1.68% from the 2026 rate of $33.40; for qualifying APM participants it falls to $33.17, down $0.40 or 1.19%. But the overall picture for radiology is not a cut: CMS estimates a net positive overall impact of roughly +2% for radiology under the 2027 proposed rule, because practice-expense and other RVU changes offset the conversion-factor reduction and the efficiency adjustment does not apply to the technical component. The ACR summarized the proposal as indicating overall positive updates for radiology. The rule is a proposal open to public comment through September 14, 2026, not a final number.
What is driving the 2027 conversion-factor cut?
The main driver is the expiration of a one-year statutory increase. Congress added a 2.50% bump to the conversion factor for CY 2026 only, and that increase is not in effect for CY 2027. That expiring bump outweighs the smaller statutory updates for 2027 (0.75% for qualifying APM participants and 0.25% for others) plus a 0.53% adjustment CMS proposes to account for changes in work RVUs, producing a net decrease.
What is the efficiency adjustment and how does it affect radiology?
In the CY 2026 final rule, CMS finalized a negative 2.5% efficiency adjustment to the work RVUs of most services that are not billed based on time — on the premise that productivity has risen with better technology and workflows. Diagnostic imaging and many procedural radiology services are not time-based, so they fall within the adjustment's scope. CMS has said it plans to recalculate the efficiency adjustment every three years, so it continues to weigh on 2027 professional-fee values even though the next recalculation is not scheduled until 2029. The ACR has argued the theorized efficiencies are outweighed by the growing number of images and reconstructions performed per study.
How can imaging groups protect margins as per-study reimbursement falls?
Even when a specialty nets out positive in a given year, the conversion factor keeps eroding and the payment attached to any single study trends down over time, so a group's margin depends on how many studies each radiologist-hour can turn into a signed, billable report. Hiring more radiologists raises cost in a supply-constrained market; the more durable lever is throughput. AI that drafts a structured, comprehensive report lets a radiologist review and sign more studies per hour rather than dictate each one from scratch. With xAID, the AI produces a ready-to-sign draft, an in-house European radiologist reviews every preliminary, and the client's reading radiologist signs the final report.
Source: CMS CY 2027 Medicare Physician Fee Schedule proposed rule fact sheet; the net +2% overall radiology impact and "overall positive updates" read from the American College of Radiology; the "devastating proposal" characterization from the Society of Interventional Radiology, as carried in coverage by Radiology Business; rule-issuance context from the American Hospital Association. Prior-year (CY 2026 final rule) specialty impacts are labeled as historical context. Figures are rounded as reported and reflect a proposed rule subject to change.