What Changes for Medical Practices on January 1, 2027: The Readiness Checklist

On January 1, 2027, an independent practice wakes up to a different fee schedule, different codes and a less stable patient coverage picture. Medicare’s conversion factor falls 2.31 percent, to $32.6286, for most clinicians. The G2211 visit add-on code is replaced by modifier B1. An office visit billed with modifier 25 alongside a same-day minor procedure is paid 20 percent less on all but the highest-valued service. Medicaid adults in the expansion group move to six-month renewals, with a work requirement and shorter retroactive coverage. New York Medicaid fee-for-service must decide prior approvals in seven days. Payers covered by the federal interoperability rule must have electronic prior authorization in place. And one deadline falls the day before: the DEA’s permission to prescribe controlled medications by telehealth without an in-person visit runs only through December 31, 2026. This guide covers each change in the order a visit meets it, from the front desk to the payment, with a checklist at the end. Everything here was checked against the primary documents on November 12, 2026.

The January 1, 2027 Changes at a Glance

At the Front Desk: Coverage Will Change More Often

January is already the month when plans change and deductibles reset. In 2027 two federal changes add to it for Medicaid, both from the budget law enacted in July 2025.

• Six-month renewals. For adults enrolled through the Medicaid expansion, states must redetermine eligibility every six months, starting with renewals scheduled on or after January 1, 2027. A patient who was covered at the last visit is more likely to have lapsed by the next one.
• A work requirement. States must begin applying a community engagement requirement to the same group no later than January 1, 2027, unless CMS grants a temporary exemption. An adult meets it with 80 hours a month of work, community service or a work program, half-time enrollment in school, or a combination, and the law lists groups who are excused.
• Shorter retroactive coverage. For applications made on or after January 1, 2027, Medicaid covers care back to the month before the application for expansion adults, and two months before for other enrollees. It used to reach back three months. A visit furnished while a patient was between coverage is now less likely to be picked up later.

New York adds its own churn. The state’s Essential Plan narrowed on July 1, 2026, when its federal waiver ended, and on the marketplace side open enrollment on HealthCare.gov runs through January 15, 2027, while New York’s own marketplace has historically kept its window open through January 31. Expect new cards well into February.

What to do: verify eligibility at every visit in the first quarter, not once a year; ask every patient for their current card; record the Medicaid coverage dates the eligibility response returns; and submit claims quickly, because the window for fixing a coverage gap after the fact is shorter. Our eligibility and benefits verification checklist lists what to confirm.

Before the Visit: Prior Authorization Gets a Clock in New York, and an Interface Everywhere

New York Medicaid fee-for-service. From January 1, 2027, the state must decide a standard prior approval request within seven days, extendable by 14 days when more information is needed, and an expedited request within 72 hours. The current rule allows 21 days. The other half of the change matters as much: when the state sends a missing-information letter, the provider has 14 calendar days to answer, and a request that goes unanswered is administratively denied. The state lists durable medical equipment, medical supplies, private duty nursing, eye care, physician services, hearing aids, radiology and dental as the affected services.

The federal interfaces. Under the CMS Interoperability and Prior Authorization rule, covered payers must run a prior authorization interface that tells a practice whether a service needs authorization, what documentation is required, and lets the request be sent and tracked electronically. The compliance date is January 1, 2027 for Medicare Advantage organizations and state Medicaid and CHIP fee-for-service programs; Medicaid and CHIP managed care plans follow with their first rating period on or after that date, and marketplace plans on the federal exchange with plan years starting on or after it. The same payers must show patients their own prior authorization requests and decisions through the patient access interface. Commercial and employer plans are not covered, and neither are drugs.

Nothing in the rule requires a practice to connect. The 2027 fee schedule rule also changed the MIPS measure that would have pushed clinicians toward it: the Electronic Prior Authorization measure is optional for the 2027 performance period, worth 10 bonus points, instead of required. The practical step is the same one we gave in the 2026 prior authorization checklist: ask your EHR vendor and each covered plan, in writing, how and when you will be able to connect.

In the Visit: Three Coding Changes

1. G2211 becomes modifier B1

The visit complexity add-on that primary care has billed as G2211 since 2024 is no longer a separate code. From January 1, 2027 it is reported by adding modifier B1 to the office, outpatient or home visit code, under the same circumstances in which G2211 is billed today. Clinicians participating in a Medicare Shared Savings Program accountable care organization use modifier B2, which pays more.

The payment works differently. G2211 added one flat amount to any visit. B1 is valued as a percentage of the visit it is attached to, so it adds more to a higher-level visit and less to a lower-level one. The adjusted values CMS published with the rule show an established-patient 99213 rising from 2.82 to 3.03 total relative value units with B1, and a 99214 from 4.02 to 4.33. At the 2027 conversion factor that is about $6.85 and $10.11 before geographic adjustment. Run your own visit mix through those values before you assume the change is neutral for you, and confirm against your Medicare contractor’s 2027 fee schedule files when they are released.

2. Modifier 25 with a same-day minor procedure pays less

When an office or outpatient evaluation and management visit is billed with modifier 25 on the same day as a procedure with a 0-day global period, by the same clinician or a clinician of the same specialty in the same group, Medicare will pay the highest-valued service in full and reduce the others by 20 percent. CMS proposed a 50 percent reduction that would also have reached 10-day and 90-day procedures; the final rule is 20 percent and 0-day procedures only. CMS says the largest effects fall on dermatology, otolaryngology and podiatry.

Procedures with a 0-day global period in the 2027 fee schedule include nail debridement (11720, 11721), paring of benign lesions (11055 to 11057), simple nail avulsion (11730), ankle or foot strapping (29540), tendon sheath and joint injections (20550, 20551, 20610), tangential skin biopsy (11102) and removal of impacted earwax (69210). The rule does not change when modifier 25 may be used. It changes what the pair pays, so the documentation standard for a separately identifiable visit is unchanged and the revenue forecast is not.

3. Telehealth claims need two new modifiers

Medicare’s telehealth flexibilities do not end in January. Congress extended them through December 31, 2027: patients can be seen at home anywhere in the country, and the in-person visit requirement for tele-mental-health does not apply until January 1, 2028. What changes on January 1, 2027 is the claim. Modifier BB is required when a telehealth service is furnished through a virtual platform the clinician contracts with or has a payment arrangement with, and modifier BC when a telehealth service is furnished incident to a clinician’s professional service. CMS says neither modifier changes payment.

On the Claim: The Medicare Fee Schedule

The CY 2027 Medicare Physician Fee Schedule final rule was published on November 9, 2026. It sets two conversion factors: $32.6286 for most clinicians, down from $33.4009, and $32.9548 for qualifying participants in advanced alternative payment models, down from $33.5675. The larger part of the drop is the end of a one-year 2.5 percent increase that Congress applied to 2026 only.

Source: CMS, Impact on CY 2027 Payment for Selected Procedures, using the non-qualifying APM conversion factors of 33.4009 for 2026 and 32.6286 for 2027. Local payment differs by geographic adjustment.

By specialty. Separately from the conversion factor, CMS estimates how the 2027 changes to relative values move each specialty’s Medicare allowed charges: clinical social workers up 11 percent, clinical psychologists up 9 percent, psychiatry up 2 percent, family practice and internal medicine up 1 percent, and podiatry down 1 percent. For psychotherapy, 2027 is the fourth and final year of a phased increase in the work values of the time-based psychotherapy codes. The conversion factor decrease applies on top of these figures, so a specialty at plus 2 percent is roughly level and a specialty at minus 1 percent is down by about 3 percent before any change in its own mix.

Upstate New York. The floor that holds Medicare’s work geographic index at 1.0 expires on January 1, 2027 unless Congress extends it again. The New York City area localities sit above 1.0 and are not affected. The “Rest of New York” locality, which covers Albany, Syracuse, Rochester and Buffalo, is listed by CMS at 0.991 without the floor, a further small reduction on the work portion of every service.

What Is Not Changing on January 1, 2027

Several things reported as January changes are not.

• Medicare telehealth from home continues through December 31, 2027.
• The MIPS performance threshold stays at 75 points, and the Electronic Prior Authorization measure is optional for 2027, not required.
• The MIPS Security Risk Analysis attestation is removed starting with the 2027 performance period. The HIPAA Security Rule’s requirement to perform a risk analysis is unchanged, so the work is still required; only the attestation goes away.
• The modifier 25 reduction is 20 percent on 0-day procedures, not the 50 percent that was proposed.
• The federal website accessibility deadline for practices is May 11, 2027 for those with 15 or more employees, not January. Our Section 504 guide has the detail.

The Year-End Readiness Checklist

Front desk and scheduling

• Verify eligibility at every visit from January 2 through March, and ask every patient for their current insurance card.
• Flag adult Medicaid patients for a coverage check before each appointment, not only at intake.
• Tell patients with high-deductible plans what they are likely to owe before the January visit.

Prior authorization

• For New York Medicaid fee-for-service, submit complete clinical documentation with the first request and calendar a response to any missing-information letter within 14 days.
• Ask your EHR vendor and each Medicare Advantage and Medicaid plan how you will connect to their prior authorization interface, and when.
• Re-send existing authorizations to a patient’s new plan in January and request continuity.

Coding and charge capture

• Replace G2211 with modifier B1 (or B2 for ACO participants) in templates, charge capture and claim edits, effective for dates of service from January 1.
• List every 0-day global procedure you bill with a same-day visit, and model the 20 percent reduction on your ten most common pairs.
• Add modifiers BB and BC to telehealth claim logic where each applies.
• Load the 2027 CPT, HCPCS and fee schedule files before the first January claim goes out. The AMA reports 453 changes in the 2027 CPT code set, including 299 new codes.

Finance and compliance

• Rebuild the 2027 Medicare revenue forecast on the new conversion factor and, upstate, the lower work index.
• For prescribers of controlled medications by telehealth, list the patients never seen in person and decide now what you will do if the DEA flexibility lapses.
• Complete this year’s HIPAA security risk analysis whether or not you report MIPS.

Frequently Asked Questions

What is the Medicare conversion factor for 2027?

The CY 2027 Medicare Physician Fee Schedule final rule sets two conversion factors, effective January 1, 2027: $32.6286 for most clinicians, down 2.31 percent from $33.4009 in 2026, and $32.9548 for qualifying participants in advanced alternative payment models, down 1.83 percent from $33.5675. The decrease is mostly the expiry of a one-year 2.5 percent increase that applied only to 2026.

What replaces G2211 in 2027?

Modifier B1. From January 1, 2027, the office visit complexity add-on is no longer billed as the separate code G2211. It is reported by adding modifier B1 to the office, outpatient or home visit code, under the same circumstances in which G2211 is billed today. Participants in a Medicare Shared Savings Program accountable care organization use modifier B2. Because the modifier is valued as a percentage of the visit, it pays more on higher-level visits and less on lower-level ones, where G2211 paid one flat amount.

Does Medicare reduce payment for modifier 25 in 2027?

Yes, in one situation. When an office or outpatient evaluation and management visit is billed with modifier 25 on the same day as a procedure that has a 0-day global period, by the same clinician or a clinician of the same specialty in the same group, Medicare pays the highest-valued service in full and reduces payment for the others by 20 percent. CMS had proposed 50 percent and a wider set of procedures; the final rule is 20 percent and 0-day global procedures only. CMS expects the largest effects in dermatology, otolaryngology and podiatry.

Do Medicare telehealth flexibilities end on January 1, 2027?

No. The Consolidated Appropriations Act, 2026 extended them through December 31, 2027, so patients can still receive Medicare telehealth at home anywhere in the country during 2027, and the in-person visit requirement for tele-mental-health does not apply until January 1, 2028. What does change on January 1, 2027 is claim coding: two new modifiers, BB and BC, are required on telehealth claims in the situations each describes.

When do the DEA telehealth prescribing flexibilities for controlled substances end?

The current rule runs through December 31, 2026. It is the fourth temporary extension of the pandemic-era flexibility that lets a DEA-registered practitioner prescribe controlled medications by telemedicine without first seeing the patient in person. As of November 12, 2026, no further extension had been published in the Federal Register. The DEA has extended the flexibility late in the year before, so check for a new rule in December, and plan for both outcomes.

Is the electronic prior authorization measure required for MIPS in 2027?

No. The CY 2027 Physician Fee Schedule final rule changed the Electronic Prior Authorization measure in the MIPS Promoting Interoperability category from required to optional for the 2027 performance period, worth 10 bonus points. The payers covered by the CMS Interoperability and Prior Authorization rule must still have their prior authorization interfaces in place in 2027.

Conclusion

None of these changes is large by itself. Together they touch every step of a visit: who is covered when the patient checks in, what has to be approved first, how the visit is coded, and what it pays. Practices that lose money in January rarely lose it to one rule. They lose it in the handoffs, when the front desk, the clinician and the biller each learn about a change in a different week. Run the checklist once in December with all three in the room.

For support, contact us at management@cclbilling.com or call (845) 579-2737.

Sources: CMS, CY 2027 Medicare Physician Fee Schedule final rule, 91 FR 70992 (November 9, 2026); CMS fact sheet on the CY 2027 final rule; CMS-1848-F downloads: Addendum B, geographic indices, specialty impacts, selected procedures, and modifier B1 and B2 adjusted values; CMS Interoperability and Prior Authorization final rule (CMS-0057-F) fact sheet; New York State Medicaid, prior approval timelines effective January 1, 2027 and missing-information process; Public Law 119-21, sections 71107, 71112 and 71119; Consolidated Appropriations Act, 2026, Public Law 119-75, sections 6208 and 6209; CMS telehealth FAQ (October 2026); DEA and HHS, Fourth Temporary Extension of Telemedicine Flexibilities; American Medical Association, CPT 2027 code set release. This article is general information for practice managers, not legal or coding advice; confirm each item against the source and your payer contracts.