2026 CPT Code Changes: 288 New Codes Every Practice Must Know

Effective January 1, 2026, the American Medical Association released 418 total CPT changes: 288 new procedure codes, 84 deleted codes, and 46 revised descriptions. The total CPT code set now exceeds 11,000 codes. This is one of the most significant annual updates in the past decade, driven by a comprehensive radiology and vascular-intervention code overhaul, the introduction of AI-assisted service codes for the first time, continued expansion of telehealth and remote physiologic monitoring codes, and refinements to the E/M prolonged-service and split/shared-visit framework. Unlike ICD-10 updates that take effect October 1, CPT changes are effective January 1 of each calendar year. The AMA publishes the final code set in September, giving practices roughly three months to prepare. Payers update their fee schedules and edit libraries on different timelines — Medicare publishes its Physician Fee Schedule final rule in November, while commercial payers like UHC, Aetna, and BCBS may not update their systems until mid-January. This lag means practices can submit claims with new codes on January 1, but some payers may reject them for the first two to four weeks until their systems catch up. Track payer readiness and hold problematic claims if necessary.

The single largest change in 2026 is a comprehensive restructuring of lower-extremity revascularization codes and vascular and interventional imaging codes. The old code families for lower-extremity angioplasty (37220-37235), stenting (37226-37237), and atherectomy (37225, 37227, 37229, 37231, 37233, 37235) have been deleted and replaced with a new family of codes that more precisely describe the vessel treated (iliac, femoral-popliteal, or tibial-peroneal), the technique used (angioplasty alone, angioplasty with stent, atherectomy), and whether imaging guidance was included or reported separately. The new code structure also changes how add-on codes work for additional vessels treated in the same session. Practices that perform any vascular or interventional radiology procedures must map every deleted code to its new replacement before January 1. A vascular surgery or interventional radiology practice billing 50 to 100 revascularization procedures per month faces tens of thousands of dollars in denials if the old codes are submitted after the cutoff date. This is not a minor update — it is a ground-up restructure that requires new documentation templates, updated charge capture workflows, and coder retraining.

For the first time in CPT history, the 2026 code set includes codes specifically for artificial intelligence-augmented clinical services. These codes cover three categories: AI-assisted image interpretation (used primarily in radiology and pathology, where FDA-cleared algorithms assist in detecting findings on imaging studies or pathology slides), AI-powered diagnostic analysis (used in cardiology for AI-augmented ECG interpretation and in dermatology for AI-assisted lesion analysis), and machine learning-augmented clinical decision support (used when a clinician employs a validated ML tool to inform treatment decisions). The documentation requirements are specific and strict: the medical record must identify the AI system used by name and version, document the physician's independent review and validation of the AI output, describe the clinical decision that resulted from incorporating the AI analysis, and confirm that the AI system holds FDA 510(k) clearance or De Novo authorization for the intended use. Early reimbursement rates are expected to range from $15 to $45 depending on the specific code and service complexity. Medicare has indicated that these codes will be valued under the practice-expense methodology, meaning reimbursement reflects the cost of the AI technology rather than physician work.

The major 2021 E/M overhaul that replaced the history-and-exam model with medical decision making (MDM) and total-time models remains the foundation for office-visit coding. However, 2026 brings three important refinements. First, prolonged-service add-on codes (99417 for office, 99418 for inpatient) receive updated time thresholds and documentation requirements. The minimum time to bill 99417 remains 15 minutes beyond the base code's maximum time, but CMS has clarified that the time must be continuous or near-continuous rather than aggregated across multiple brief interactions during the same date of service. Second, split/shared visit rules for facility-based E/M services are finalized: the practitioner who performs the substantive portion bills the visit, with substantive portion defined as more than half of the total time. Documentation must clearly identify which practitioner performed each component. Third, the G2211 visit complexity add-on code — which pays an additional $16.04 under the 2026 Medicare fee schedule — continues to be available for office visits where the physician manages a patient's ongoing relationship with the practice for a serious or complex condition. Our data shows practices that optimized for MDM-based coding and G2211 capture see 8 to 15% higher average reimbursement per office visit compared to practices still defaulting to 99213 for most encounters.

The 2026 CPT update expands remote physiologic monitoring (RPM) and remote therapeutic monitoring (RTM) code families. RPM codes 99453 through 99458 now include clarified documentation requirements for the 16-day minimum data transmission threshold and the 20-minute monthly management time requirement. New RTM codes cover monitoring of additional conditions beyond the original musculoskeletal and respiratory categories. CMS has also finalized permanent telehealth coverage for mental health services (90791, 90792, 90834, 90837, and related codes) with Place of Service 10 (patient at home) and modifier 95. Audio-only telehealth remains available for behavioral health services with modifier 93, though reimbursement rates are lower than audio-video visits. For practices delivering care across state lines, remember that telehealth billing rules follow the patient's location at the time of service, not the provider's location. State licensure requirements, Medicaid telehealth policies, and commercial payer telehealth rules vary significantly, and the originating site determines which rules apply.

The 2026 Medicare Physician Fee Schedule conversion factor is $32.35, a modest decrease from $33.29 in 2025. This 2.8% reduction affects every CPT code valued under the physician fee schedule. However, the impact varies by specialty because CMS also adjusts relative value units (RVUs) annually. Specialties gaining RVU increases — primarily those with new high-complexity codes — may see net-neutral or positive reimbursement changes despite the lower conversion factor. Specialties losing RVUs face a double reduction. Commercial payer fee schedules typically benchmark against Medicare at a multiplier: Aetna averages 130 to 150% of Medicare, BCBS varies by state plan from 110% to 180%, UHC averages 120 to 140%, and Cigna averages 125 to 145%. When Medicare rates drop, commercial contracts that are pegged to a Medicare percentage drop proportionally unless the contract uses a fixed fee schedule. Review your payer contracts now to understand whether your rates are Medicare-linked or independently negotiated.

Follow these seven steps before January 1. Step 1: identify which deleted codes your practice currently uses by running a CPT frequency report for the past 12 months. Step 2: map every deleted code to its 2026 replacement using the AMA's CPT code crosswalk published in September. Step 3: update EHR templates, code favorites, and charge capture forms. Step 4: train providers on documentation changes required by new code specificity — particularly for vascular procedures, AI-augmented services, and prolonged-service time tracking. Step 5: verify your clearinghouse accepts the 2026 code set and has updated its edit libraries. Step 6: brief your coding team on specialty-specific changes using AMA CPT Assistant articles and AAPC webinars. Step 7: monitor payer readiness by checking each major payer's provider bulletin for their system update timeline. If you work with Go Medical Billing, we handle all seven steps for you. Our team updates coding workflows before every annual code change, maps all deleted codes for every client, and proactively notifies providers when documentation adjustments are needed. Zero clients have experienced a coding-transition denial under our management.