Every November, CMS releases the next year's Medicare Physician Fee Schedule (MPFS) Final Rule, and every billing team scrambles to understand what changed. The 2026 Final Rule, which took effect January 1, 2026, is one of the most consequential in years.
Here is a practical breakdown of the changes that matter most for medical billing, coding, and revenue cycle teams.
1. The Conversion Factor
The 2026 conversion factor was a major win after years of cuts. Practices that planned for a flat or declining rate environment have an immediate revenue tailwind, but only if their coding and modifier usage is dialed in.
Action item: re-run your top-25 CPT code revenue projection at the 2026 rate. If your contracted commercial rates are tied to a percentage of Medicare, this also flows through to your commercial collections.
2. Evaluation and Management (E/M) Updates
Several E/M code families saw clarifying changes in 2026:
- Time thresholds for office/outpatient E/M (99202-99215) were re-affirmed with clarified documentation expectations.
- The split/shared visit policy was updated. The "substantive portion" requirement now formally allows either time OR medical decision-making (MDM) as the qualifying factor for inpatient/observation services.
- The G2211 add-on (visit complexity for ongoing care of a serious condition) saw expanded payment, making it a more important capture for primary care and chronic care.
Action item: audit your last 90 days of E/M coding against the 2026 rules. Practices commonly under-capture G2211 by 30 to 50%.
3. Telehealth Flexibilities
The pandemic-era telehealth flexibilities continue through 2026 with several extensions made permanent:
- Audio-only telehealth for behavioral health remains permanent.
- Home as an originating site is extended through December 31, 2026.
- The cross-state Medicare telehealth allowance continues, but state-level licensure rules apply.
- New CPT/HCPCS codes were added for asynchronous telehealth ("store-and-forward") encounters.
Action item: confirm your telehealth modifiers (93, 95) and place-of-service codes (02, 10) are mapped correctly in your EHR. Mis-mapping is the #1 cause of telehealth denials this year.
4. Prior Authorization (CMS-0057-F) Goes Live
The Interoperability and Prior Authorization Final Rule begins enforcement in 2026:
- Impacted payers must send PA decisions within 72 hours (urgent) and 7 calendar days (standard) starting January 1, 2026.
- Public reporting of PA metrics begins in 2026 for calendar year data.
We covered PA automation in depth in our recent post on prior authorization automation.
5. Behavioral Health Integration
CMS expanded coverage and payment for:
- Behavioral Health Integration (BHI) services
- Collaborative Care Model (CoCM) codes
- Mental health visits provided via telehealth
Action item: if your primary care practice has not implemented CoCM, 2026 is the year. Reimbursement now adequately covers the staffing model, and patient outcomes data is strong.
6. MIPS and Quality Reporting
For Quality Payment Program (QPP) participants:
- The MIPS performance threshold remains at 75 points.
- The Cost category continues to grow as a percentage of the final score.
- MIPS Value Pathways (MVPs) expanded with several new specialty-specific pathways.
- The Promoting Interoperability category placed greater weight on actual API usage, not just capability attestation.
Action item: if you are still reporting traditional MIPS, evaluate MVP options for your specialty. Many physicians find MVP reporting easier and score better.
7. Risk Adjustment and HCC
CMS continued the multi-year phase-in of the v28 HCC model, which:
- Removed 2,200+ ICD-10 codes from the HCC mappings
- Reduced the number of HCC categories
- Generally produces lower risk scores than the v24 model
Action item: if you participate in any risk-bearing arrangements (MA, ACOs, Direct Contracting/REACH), reconfirm your annual wellness visit (AWV) and HCC capture workflows. Practices using v24 documentation templates are systematically under-capturing under v28.
8. Place of Service Updates
Several place-of-service (POS) code clarifications took effect:
- POS 10 (Telehealth Provided in Patient's Home) usage expanded.
- POS 02 (Telehealth Provided Other than Patient's Home) clarified for non-home telehealth.
- POS 21 (Inpatient Hospital) policies for split/shared visits aligned with the substantive portion rules.
9. Drug Pricing (Part B and Inflation Rebate)
The Inflation Reduction Act provisions continue rolling out:
- Inflation rebate program for Part B drugs continues.
- ASP+6% remains the standard payment formula with rebate offsets for inflation-impacted drugs.
Action item: if you administer Part B drugs, confirm your buy-and-bill workflows account for the inflation rebate timing.
10. Audit and Compliance Focus Areas
CMS, OIG, and the MACs published their 2026 audit focus areas. Expect heightened scrutiny on:
- Split/shared visit documentation
- Telehealth audio-only behavioral health claims
- G2211 add-on usage
- E/M time documentation
- Modifier 25 with same-day procedures
Action item: pull a 10-claim sample from each focus area for an internal audit before the MAC does it for you.
How Billorarcm Services LLC Stays Ahead
Our coding and compliance team tracks every CMS rule update and propagates the changes into:
- Coding workflows and templates
- Claim scrubbing rules
- Audit checklists
- Provider education materials
- Real-time dashboards that flag claims at risk of denial under new rules
We monitor each CMS Final Rule, NCCI quarterly update, MAC LCD changes, and OIG work plan release so you do not have to.
What to Do This Quarter
- Re-run your top-25 CPT revenue projection at the 2026 conversion factor.
- Audit G2211 and split/shared visit capture.
- Map your telehealth modifiers and POS codes in your EHR.
- Confirm your MIPS or MVP track selection for 2026.
- Pull internal audit samples for CMS/OIG focus areas.
The Bottom Line
The 2026 CMS Final Rule has a lot of moving parts, but the practices that adapt fastest will see meaningful revenue gains. If you would like a free analysis of how the 2026 changes impact your specific specialty and payer mix, reach out for a complimentary assessment.