For one year, anesthesia groups got a small reprieve. The 2026 Medicare anesthesia conversion factor rose slightly, helped by a one-time 2.5% boost from the One Big Beautiful Bill Act. That boost expires at the end of 2026, and CMS has already proposed what comes next: a lower conversion factor for 2027.
The final rule is expected on or around November 1, and new rates take effect January 1, 2027. That leaves roughly 90 days. This guide explains what CMS proposed and lays out a practical plan for the weeks between now and the first 2027 remittances.
What CMS Proposed for 2027
In the CY 2027 Medicare Physician Fee Schedule proposed rule released July 14, 2026, CMS proposed the following anesthesia conversion factors, as summarized by the American Society of Anesthesiologists:
| 2026 final | 2027 proposed | Change | |
|---|---|---|---|
| Anesthesia, most clinicians (non-qualifying APM) | $20.4976 | $20.2143 | -1.38% |
| Anesthesia, qualifying APM participants | $20.5998 | $20.4165 | -0.88% |
Most anesthesiologists do not qualify for the higher APM rate, so the -1.38% figure is the one most groups should plan around. The decrease mainly reflects the expiration of the one-time 2026 increase, partly offset by small statutory and budget neutrality adjustments.
These are proposed numbers. The final figures may change, and actual payment also varies by locality. But groups that wait for the final rule to start planning will spend January reacting instead of preparing.
What a 1.38% Cut Looks Like in Dollars
The national difference between the 2026 and proposed 2027 rates is about $0.28 per unit. That sounds small until you multiply it by your Medicare volume.
For example, a group that bills 500,000 Medicare anesthesia units a year would collect roughly $141,000 less at the proposed 2027 rate than at the 2026 rate, before locality adjustments. Use your own Medicare unit volume to estimate your exposure.
And Medicare is rarely the whole story. Many commercial contracts and some Medicaid programs are tied to a percentage of Medicare. When the Medicare rate drops, those payments can drop with it.
Your 90-Day Plan
October: Measure your exposure
Pull 12 months of Medicare anesthesia units by facility and estimate the impact at the proposed rate.
List every commercial and Medicaid contract that references Medicare rates and flag which ones will move automatically.
Review current A/R and denials. Revenue you have already earned is the easiest money to protect.
November: Confirm and update
Review the final rule as soon as it is released and update your impact model with final numbers.
Update expected reimbursement tables in your billing system so underpayments are flagged correctly in January.
Start stipend and contract conversations early, using the impact model as evidence.
December: Close out 2026 cleanly
Push to submit every 2026 case and resolve open claims before year end.
Confirm MIPS quality data completeness for the 2026 performance year. Scores below 75 points lead to a negative payment adjustment in 2028.
Review the proposed 2027 MIPS measure changes so documentation workflows are ready on January 1.
January: Watch the first remittances
Compare the first 2027 payments against expected rates by payer.
Watch for new denial patterns as payers update their systems.
Report the actual impact to group leadership and facility partners within the first 60 days.
The Quality Program Changes Hiding in the Same Rule
The 2027 proposed rule also changes anesthesia quality reporting. CMS proposed removing two anesthesia measures it considers "topped out," adding new measures for patient-reported experience and intraoperative hypotension, and eliminating Traditional MIPS starting with the 2029 performance year. We cover those changes in detail in our MIPS 2027 guide for anesthesiologists.
Where Accreda Fits
Accreda, the anesthesia revenue cycle division of Cosentus, models payment changes for every client by facility and payer, updates expected reimbursement as soon as rules are final, and works A/R continuously so year-end revenue is not left behind. Zeus Health, the Ai-native platform from Cosentus, checks every claim before it goes out, so the cases you bill under tighter rates are paid correctly the first time.
FAQs
The Bottom Line
The 2027 cut is modest on paper and meaningful in practice. Groups that measure their exposure now, close out 2026 cleanly, and walk into stipend and contract conversations with data will feel it far less than groups that discover it on their first January remittance.
Schedule a no-cost anesthesia revenue analysis with Accreda and get a facility-level estimate of your 2027 exposure.