What Are the 2027 Medicare Changes for Family Medicine?
As of July 2026, the CMS CY 2027 Physician Fee Schedule proposed rule introduces three changes that directly reshape how family medicine practices get paid. CMS proposes replacing the G2211 visit complexity add-on code with a percentage-based modifier (MOD1) that increases qualifying E/M visit payment by 16 percent, or 32 percent for ACO participants. At the same time, the conversion factor decreases 1 to 1.7 percent as the 2026 payment increase expires, and CMS proposes cutting same-day E/M visits billed alongside procedures by 50 percent. The comment deadline is September 14, 2026.
G2211 becomes a percentage modifier: The flat-rate add-on code is replaced by MOD1, a modifier that increases E/M reimbursement by 16 percent of the base code value, scaling with visit level rather than paying a fixed amount.
Conversion factor dropping: The non-APM conversion factor drops from $33.40 to a proposed $32.84, a 1.7 percent decrease that offsets some of the G2211 modifier gain.
Same-day procedures penalized: Family practices that bill an E/M visit alongside a skin biopsy, joint injection, or other procedure on the same day will see the lower-valued service cut to 50 percent.
What CMS Proposed for 2027
On July 14, 2026, CMS released the CY 2027 Medicare Physician Fee Schedule proposed rule, designated CMS-1848-P. For family medicine and primary care, this is one of the most structurally significant proposals in years because it changes how the visit complexity add-on is calculated, not just what it pays.
The G2211 code has been billed as a flat-rate add-on since CMS implemented it in 2025. It was designed to recognize the inherent complexity of E/M visits involving longitudinal, relationship-based care. For 2027, CMS proposes deleting G2211 entirely and replacing it with a modifier (placeholder name MOD1) that can be appended to the E/M base code. The modifier would increase the payment of the associated E/M code by 16 percent. For practitioners in qualifying ACOs such as the Medicare Shared Savings Program, CMS proposes a separate modifier valued at 32 percent of the base E/M code, recognizing the additional care coordination and total cost of care accountability those providers carry.
Alongside this change, the proposed 2027 conversion factor is $33.17 for qualifying APM participants and $32.84 for non-qualifying providers, representing cuts of 1 percent and 1.7 percent compared to 2026. The decrease stems from the expiration of the temporary 2.5 percent payment increase Congress enacted for 2026. CMS also proposes a 50 percent payment reduction when a same-day E/M visit is billed alongside a procedure with a global period by the same physician or a physician in the same practice.
The comment period closes September 14, 2026.
Who Do These Changes Apply To?
The G2211 modifier change applies to every family medicine practice that currently bills the G2211 add-on code on E/M visits. If your practice bills G2211 on the majority of office visits, which most primary care practices do, the transition to a percentage-based modifier changes the math on every claim. Through Family Med Billers, the pattern we see is that family practices are among the highest-volume billers of G2211 in the PFS because nearly every primary care encounter qualifies under the longitudinal care criteria.
The conversion factor decrease applies to every Medicare claim regardless of specialty or code. The same-day E/M reduction targets practices that bill an E/M visit with modifier 25 on the same day as a procedure with a 0-day, 10-day, or 90-day global period. In family medicine, this is common. Skin biopsies, joint injections, laceration repairs, wart destructions, and minor in-office procedures are routinely performed alongside an E/M visit on the same date of service. Under the proposed rule, the lower-valued service on those claims would be reimbursed at only 50 percent.
Rural health clinics, community health centers, and practices participating in ACO models face additional considerations. The 32 percent ACO modifier is a significant positive for MSSP participants, but the conversion factor decrease and same-day rule still apply. The net impact for any given practice depends on encounter mix, procedure volume, and APM participation status.
What the G2211 Modifier Change Actually Means
The shift from a flat-rate code to a percentage-based modifier is more than a billing technicality. Under the current G2211 system, the add-on pays the same dollar amount regardless of whether the base E/M visit is coded as a 99212 or a 99215. Under the proposed percentage modifier, the 16 percent increase scales with the base code. Higher-level visits produce a larger dollar add-on. Lower-level visits produce a smaller one.
For family medicine practices that bill a high proportion of moderate to high-complexity visits (99214 and 99215), the percentage modifier may actually increase the G2211 component of reimbursement compared to the current flat rate. For practices that bill primarily lower-level visits, the per-visit add-on will decrease. The net effect depends on your visit-level distribution. One question we hear constantly from practice managers is whether the G2211 change helps or hurts their practice. The answer is that it depends entirely on your E/M code mix, and the only way to know is to model it against your actual claims.
The ACO modifier at 32 percent is a clear incentive for practices to participate in the Medicare Shared Savings Program. CMS has stated that the higher valuation reflects the additional resource costs of maintaining total cost of care accountability and reporting quality measures. For family practices already in or considering MSSP participation, the 32 percent modifier represents a meaningful revenue advantage over the standard 16 percent.
How Will This Affect Your Practice Revenue?
The revenue impact depends on your E/M code distribution, procedure volume, payer mix, and APM participation. Here is a comparison of the key payment components under the proposed 2027 rule:
| Payment Component | 2026 (Current) | 2027 (Proposed) |
|---|---|---|
| Conversion factor (non-APM) | $33.40 | $32.84 (1.7% decrease) |
| G2211 / visit complexity | Flat-rate add-on (same $ for all E/M levels) | MOD1: 16% of base E/M code (scales by level) |
| ACO visit complexity | Same flat-rate G2211 | ACO modifier: 32% of base E/M code |
| Same-day E/M + procedure | Both paid at 100% with modifier 25 | Lower-valued service at 50% |
For a family practice billing 400 E/M visits per month with G2211 on most of them, the transition from a flat add-on to a 16 percent modifier shifts revenue based on visit-level distribution. Practices with a heavy 99214 and 99215 mix may see a net gain on the add-on component even after the conversion factor decrease. Practices billing primarily 99212 and 99213 may see a net loss. The same-day procedure reduction adds a separate layer of impact for any practice that performs in-office procedures alongside evaluation visits.
What to Do Before September 14
The September 14, 2026 comment deadline is the most immediate action date. Here is the preparation checklist for family medicine practices:
1. Pull your E/M code distribution for the past 12 months. Break out how many claims you submitted at each level (99212 through 99215) and how many carried G2211. This is the data you need to model the modifier transition.
2. Calculate the difference between the flat G2211 payment and 16 percent of each E/M level. Compare the current flat-rate G2211 reimbursement against 16 percent of each base E/M code to see whether your practice gains or loses at each visit level.
3. Identify same-day E/M and procedure claims. Pull every claim from the past year where your practice billed an E/M visit with modifier 25 alongside a skin biopsy, joint injection, or other minor procedure. Apply a 50 percent reduction to the lower-valued service on each one.
4. Review modifier 25 documentation compliance. CMS is clearly signaling that same-day E/M billing is under scrutiny. Ensure every same-day visit meets the separately identifiable standard.
5. Assess ACO participation. If your practice is in or considering the Medicare Shared Savings Program, model the 32 percent modifier against your current G2211 revenue. The differential may change your cost-benefit analysis.
6. Evaluate your billing partner’s readiness. If you outsource billing, confirm that your billing company understands the G2211-to-modifier transition, can model the revenue impact by visit level, and has a plan for the same-day rule.
Billing Mistakes This Change Will Expose
Across the billing companies we vet, a recurring pattern in family medicine practices is that G2211 is billed automatically on every E/M visit without confirming that the visit meets the longitudinal care criteria. Under the current flat-rate system, this produces consistent revenue regardless of whether the underlying documentation supports the code. Under the proposed percentage-based modifier, the stakes change. CMS is restructuring how it recognizes visit complexity, and that signals increased attention to whether the modifier is being applied appropriately.
The most common issue we see providers run into is same-day preventive and problem-oriented visit billing. Family medicine practices routinely see a patient for a scheduled Annual Wellness Visit and address a problem-oriented concern during the same encounter. Coding this correctly with modifier 25 requires clear documentation that the problem-oriented service was separately identifiable. Under the proposed same-day rule, the lower-valued service would also be cut to 50 percent, doubling the cost of a documentation error. If you are evaluating your billing setup, our guide on how to find the right family medicine billing service covers the factors to weigh.
In-House vs. a Family Medicine Billing Partner
Providers often come to us after a reimbursement change has already reduced their revenue, not before. The 2027 proposed rule gives family practices an opportunity to evaluate billing operations while there is still time to prepare.
A billing company with direct family medicine experience already understands the preventive versus problem-oriented E/M distinction, manages G2211 eligibility criteria across a high volume of visits, handles modifier 25 documentation compliance for same-day preventive and sick visit combinations, and captures Chronic Care Management and Annual Wellness Visit revenue that in-house teams frequently leave on the table. These are the areas where the proposed 2027 changes create the most financial exposure.
If your current billing team cannot model the revenue impact of the G2211-to-modifier transition by visit level, cannot tell you how many same-day E/M and procedure claims your practice files, or does not have a documented process for modifier 25 compliance, those are signals that your billing operation is not positioned for what 2027 may bring. Family Med Billers connects practices with billing companies that specialize in primary care claims, not generalists who will learn the new modifier rules after your reimbursement changes.
The proposed 2027 changes restructure how every E/M visit with a complexity add-on gets paid, reduce reimbursement for same-day procedures, and drop the conversion factor. If your billing team cannot model the impact before the final rule, now is the time to connect with a family medicine billing company that can.
Frequently Asked Questions
When do the proposed 2027 family medicine Medicare changes take effect?
The proposed changes are part of the CY 2027 Medicare Physician Fee Schedule proposed rule and would take effect January 1, 2027, if finalized. CMS is accepting public comments through September 14, 2026, and the final rule is expected later this fall. The G2211 modifier transition and the same-day E/M rule could both be modified in the final version.
What replaces G2211 in 2027?
CMS proposes replacing HCPCS code G2211 with a percentage-based modifier (placeholder name MOD1) that increases E/M visit payment by 16 percent of the base code value. For practitioners in qualifying ACOs such as the Medicare Shared Savings Program, a separate modifier would increase payment by 32 percent. The modifier would be billed under the same eligibility criteria as the current G2211 code.
Will the G2211 modifier change help or hurt primary care practices?
It depends on your E/M code distribution. Practices that bill a high proportion of moderate to high-complexity visits (99214, 99215) may see a net increase because 16 percent of a higher-valued code produces a larger dollar add-on than the current flat rate. Practices billing primarily lower-level visits may see a decrease. The only way to know is to model it against your actual claims.
Does the same-day E/M cut apply to preventive visit combinations?
The proposed 50 percent reduction applies when a separately identifiable E/M visit is billed on the same day as a procedure with a global period. Same-day preventive and problem-oriented visit combinations billed with modifier 25 may also be affected depending on how CMS defines the scope. Practices should model their same-day billing volume and monitor the final rule language carefully.
Is this the same same-day E/M proposal CMS made in 2019?
CMS proposed a similar same-day E/M payment reduction in the CY 2019 PFS proposed rule but did not finalize it after significant pushback. The 2027 version revives the concept. The comment period closes September 14, 2026, and advocacy organizations are organizing responses.
Will commercial payers follow the Medicare same-day E/M rule?
Many commercial and Medicaid payers benchmark their payment policies to the Medicare PFS, but the timing and extent vary. Some adopt Medicare changes directly while others maintain separate same-day billing rules. Family practices should confirm with their top payers whether they plan to mirror this proposal if finalized.
Next Steps
Pull your E/M code distribution and G2211 billing volume for the past 12 months and model the revenue impact of the 16 percent modifier against the current flat-rate add-on at each visit level.
If your practice performs in-office procedures alongside E/M visits, model the additional 50 percent reduction on the lower-valued service for those same-day claims.
When you are ready to evaluate whether your billing partner can handle the 2027 changes, we can connect you with a family medicine billing company in as little as 30 minutes.
The proposed 2027 Medicare changes restructure the visit complexity add-on, reduce the conversion factor, and impose a new same-day billing penalty. Whether you need a billing partner who already understands primary care E/M coding, modifier compliance, and Chronic Care Management capture, or want to compare your current company’s readiness, Family Med Billers matches you with vetted family medicine billing experts at no cost.
