Starting January 1, 2024, CMS activated a powerful new billing tool: HCPCS add-on code G2211. For physician practices, this represents both a way to capture work you’re already doing and a potential new revenue stream.

What Is G2211?

G2211 is an add-on code for office and outpatient evaluation & management (E/M) services (99202–99205, 99211–99215).

It is used when a provider serves as either:

• The continuing focal point for all of a patient’s health needs (often primary care), or
• A specialist managing ongoing care for a patient’s single, serious, or complex condition.

In plain terms, G2211 captures the inherent complexity of a visit when a longitudinal patient-provider relationship exists.

Why Was G2211 Introduced?

• In 2021, Medicare restructured E/M services, recognizing that managing patients’ health is more than just time or procedures, it requires continuity, coordination, and cognitive effort.
• CMS projected that up to 90% of outpatient E/M visits could qualify for G2211.
• After a moratorium, it became billable in 2024, valued at 0.49 RVUs (~$16 nationally).

2025 Update: G2211 and Modifier 25

Originally, G2211 could not be billed when an E/M visit was reported with Modifier 25 (such as same-day procedures or preventive services).

Effective January 1, 2025:

• CMS expanded G2211’s use. It may now be billed with certain preventive services, such as:
  • Annual Wellness Visits (AWV)
  • Vaccine administration
  • Other Medicare Part B preventive services in office/outpatient settings
• Still NOT allowed with:
  • Same-day minor procedures (0- or 10-day global)
  • E/M services where there is no documented longitudinal or complex care relationship

This change represents a major opportunity for practices, particularly primary care and specialties managing chronic conditions, to capture additional revenue when preventive and complex care intersect.

Key Billing & Documentation Rules (2025)

1. Effective Date: G2211 became payable January 1, 2024 (implementation February 19, 2024).
2. Where It Applies:
   • Office (POS 11)
   • Outpatient hospital (POS 19, 22)
   • Telehealth (POS 02, 10) both audio-visual and audio-only.
3. Modifier 25 Rules (Updated 1/1/2025):
   • Allowed: G2211 can now be billed with certain preventive services (Annual Wellness Visits, vaccine administration, other Part B preventive services) when Modifier 25 is appended.
   • Not Allowed: G2211 still cannot be billed with same-day minor procedures (0- or 10-day globals) or when Modifier 25 is used for procedures.
4. Not Eligible If:
   • The encounter is discrete, routine, or time-limited (e.g., urgent care, one-time consult, mole removal).
   • The service occurs in a global surgical period.
   • There is no documented longitudinal or complex care relationship.
5. Documentation Requirements:
   • Note must support ongoing care or management of a serious/complex condition.
   • Assessment/plan should reflect intent for continuity of care.
   • Claim history and diagnosis codes should support the longitudinal relationship.
6. Coinsurance/Deductible: Applies. Patients are responsible for cost-sharing just as with other E/M services.

 For full CMS instructions, see MM13473 – How to Use the Office & Outpatient Evaluation and Management Visit Complexity Add-on Code G2211.

Specialty Examples

CMS and specialty societies provide examples of when G2211 is appropriate:

• Primary Care: Managing sinus congestion in a patient with ongoing chronic conditions.
• Cardiology: Long-term management of atrial fibrillation or heart failure.
• GI: Ongoing care for Crohn’s disease, ulcerative colitis, or cirrhosis.
• Infectious Disease: HIV management requiring trust and adherence monitoring.
• Ophthalmology: Long-term glaucoma management with compliance challenges.
• Pain Management: Chronic pain patients for whom the pain physician serves as the “primary” provider of ongoing pain care.
• Urology: Advanced prostate cancer managed over years, including treatment decisions within context of complex condition.

Not appropriate for acute-only visits (e.g., simple UTI without ongoing relationship).

Revenue Opportunity for Practices

G2211 may only add $16–$18 per visit, but multiplied across patient panels it becomes significant.

AAPC estimates that a practice with:

• 2,500 Medicare patients + 1,250 Medicare Advantage patients,
• Assuming 40% of visits qualify, billed ~4x per year…

Could generate over $97,000 annually in additional reimbursement for the same work you already provide.

Beyond revenue, it also:

• Offsets Medicare’s ongoing conversion factor cuts.
• Better reflects the true cognitive work and continuity physicians provide.
• Positions practices for value-based care models by documenting longitudinal relationships.

How to Implement G2211 in Your Workflow

• Provider Education: Train physicians and APPs on when it applies.
• EHR Optimization: Add a checkbox or templated statement in your note to capture longitudinal relationship.
• Coder Oversight: Ensure G2211 isn’t billed with Modifier 25 when tied to procedures.
• Audit & Monitor: Use payer remits to track acceptance and denials; appeal when necessary.
• All Payers: Bill G2211 to commercial plans as many are adopting it in parallel with Medicare.

Bottom Line

G2211 is more than a billing code, it’s recognition of the ongoing, complex work of patient care. By adopting it consistently and appropriately, practices can:

√ Capture $90K+ in new revenue annually.
√ Strengthen documentation of continuity and complexity of care.
√ Better align with value-based payment models.

If your practice hasn’t started using G2211, now is the time to build it into your billing process.

Get Your Free “Bill This / Not That” G2211 Cheat Sheet

Understanding when to bill G2211 can feel complicated which is why we’ve created a one-page quick reference guide that makes it simple.

√ Clear Bill vs. Don’t Bill scenarios
√ Real-world specialty examples
√ Potential revenue impact calculator

Download the G2211 Quick Reference Guide

Peregrine Healthcare can help your practice train providers, implement coding workflows, and audit for compliance to maximize reimbursement opportunities.

Call 877-463-1110 to request a Revenue Cycle Audit and see how much G2211 could add to your bottom line.

Want the official word from CMS?

Review the full CMS resource: MM13473 – How to Use the Office & Outpatient Evaluation and Management Visit Complexity Add-on Code G2211 — click here  CMS MM13473 PDF