We Just Got Used to G2211. Now CMS Is Changing It

By Jennifer McNamara | Healthcare Inspired

We've spent considerable time educating physicians and coding teams on G2211. Practices have updated their billing systems, developed internal guidance, and worked through the documentation requirements.

Now CMS is changing how it will be reported and reimbursed.

Beginning January 1, 2027, G2211 will transition from a separately reported add-on code to modifier B1.

Modifier B1 will provide a 16% payment increase to the associated qualifying E/M service.

CMS also finalized modifier B2, which provides a 32% increase for eligible practitioners participating in certain Medicare Accountable Care Organizations (ACOs).

I have no objection to simplifying billing, but practices should be evaluating the reimbursement implications and reviewing their existing workflows before making the transition.

A modifier doesn't eliminate the documentation requirements.

One of the challenges we've had with G2211 involves understanding the clinical relationship that supports reporting it.

G2211 was developed to recognize additional complexity associated with longitudinal patient care. It is not intended to be reported automatically simply because a physician sees an established patient.

The practitioner must meet the applicable requirements involving continuing responsibility for the patient's care or ongoing management of a serious or complex condition.

The transition to B1 does not eliminate those underlying requirements.

I would caution practices against replacing every G2211 charge with B1 without evaluating the encounter and confirming the service qualifies.

If a practice has been reporting G2211 appropriately, the transition should be easier. If G2211 has become an automatic charge, I would review that process before implementing the new modifier.

Reimbursement will vary by E/M level.

Under the existing methodology, G2211 receives a separately calculated payment.

Modifier B1 changes that to a 16% increase in the associated E/M payment.

The additional amount will vary depending on the underlying E/M service.

Practices should compare their current G2211 reimbursement against projected payment using B1.

I would also review ACO participation before implementing modifier B2.

Eligibility for B2 is not determined simply by treating patients longitudinally. CMS limits its use to qualifying practitioners participating in specified ACO arrangements, and reporting the modifier is voluntary.

Organizations need to determine which practitioners qualify and how those claims should be processed.

I would be reviewing the billing system now.

Many practices have already incorporated G2211 into their EHR, charge capture, and billing processes.

Those systems may include automated charge suggestions, claim edits, reporting functions, and productivity tracking.

All of those processes deserve review.

I would specifically examine how the system will handle B1 and B2, whether existing G2211 edits will be retired, and whether the billing team understands the requirements.

I would also review current utilization by practitioner.

An analysis of G2211 reporting can help identify inconsistencies, documentation concerns, and potential missed reimbursement.

We should already be doing that work as part of routine revenue integrity reviews.

One final consideration

I would not assume commercial payers and Medicaid programs will automatically recognize B1 and B2 on January 1.

Each payer's policy and contractual reimbursement methodology will need to be considered.

I've seen practices implement Medicare changes across every payer without first evaluating whether those policies apply. That can create unnecessary billing problems.

The coding transition is manageable, but it deserves more attention than simply replacing G2211 with a modifier.

Practices have less than two months to review their current processes before the new Medicare requirements take effect.

I would use that time to evaluate utilization, documentation, system configuration, and expected reimbursement.

Next in the series: Why the Medicare conversion factor doesn't tell you how much revenue your practice will lose.

SOURCE CMS: CY 2027 Medicare Physician Fee Schedule Final Rule (November 4, 2026)