2026 E/M Coding Updates: What Physician Billers Need to Know This Year

The Evaluation and Management (E/M) coding rules have evolved every year since the 2021 office-visit overhaul, and 2026 brings another meaningful set of changes. For physician billers, getting these right is the difference between accurate revenue and a Targeted Probe and Educate letter.

This guide breaks down what's actually changed for 2026, what hasn't, and how to update your documentation and billing workflows.

The Big Picture: How E/M Coding Got Here

Since CPT 2021, office and outpatient E/M codes (99202–99215) have been leveled by either medical decision making (MDM) or total time. History and exam no longer drive the level — though they still must be medically appropriate.

In 2023, those rules extended to hospital inpatient, observation, consultations, ED, nursing facility, and home services. 2026 layers refinements on top of that framework rather than restarting it.

What's New for E/M in 2026

1. Refined Time Definitions for Hospital and Observation Codes

CMS clarified that for inpatient and observation E/M codes, "total time on the date of the encounter" includes both bedside and non-bedside time spent in patient management activities — provided they occur on the calendar date of the visit. Time from the day before or after does not count, even for overnight observation stays that span midnight.

Impact: Documentation must clearly anchor time to the calendar date. "Total time spent on patient care" without a date no longer satisfies reviewers.

2. Updated Split/Shared Visit Rules (Modifier FS)

For 2026, the "substantive portion" of a split/shared visit in a facility setting is defined as either more than half of the total time OR the performance of a substantive portion of the MDM (history, exam, and MDM elements). CMS finalized that practices can choose either method, but the chosen method must be documented in the note.

Modifier FS is required on the claim whenever the visit is split between a physician and an NPP.

Impact: The note must explicitly identify which clinician performed the substantive portion and how (time or MDM-based).

3. Continued Telehealth E/M Coding Updates

Telehealth E/M codes 99202–99215 remain billable with Modifier 95 and Place of Service 02 (non-home) or 10 (home). Audio-only services use Modifier 93. The 2026 Physician Fee Schedule continued payment parity for many telehealth services through at least Q3 2026, but practices should monitor the OPPS final rule mid-year.

4. Prolonged Services Code G2212 Continues

For 99205 and 99215 visits exceeding the highest time threshold, Medicare continues to require G2212 (15-minute increments beyond the typical time of the primary code) rather than CPT's 99417. Commercial payers vary — most accept 99417.

Impact: Maintain a payer matrix. Submitting G2212 to a commercial payer that requires 99417 (or vice versa) is a guaranteed denial.

5. Updated MDM Table Examples

The AMA refreshed the examples in the MDM table for 2026 to reflect contemporary clinical scenarios (more chronic disease management examples, more behavioral health). The four-element framework (number/complexity of problems, data, risk) is unchanged.

What Hasn't Changed (But Is Still Misunderstood)

The "Threatened Bodily Function" Risk Element

Drug therapy requiring intensive monitoring for toxicity (e.g., warfarin, lithium, methotrexate) qualifies for high-risk MDM. Many coders still don't capture this when it applies.

Independent Historian as a Data Element

When a physician obtains history from a caregiver, family member, or EMS — because the patient is unable to provide reliable history — this counts as an independent historian and supports a higher MDM data category.

Time Must Be Personally Spent

For time-based coding, only the billing provider's personal time counts. Time spent by clinical staff (MA, nurse) does not count toward the E/M level.

The 5 Most Common 2026 E/M Errors

1. Over-Leveling Based on Chronic Conditions Alone

A patient with multiple chronic conditions does not automatically qualify for level 4 or 5. The visit must address those conditions in a way that meets MDM criteria.

2. Under-Leveling Time-Based Visits

Practices that have not retrained on the 2021/2023 rules continue to bill 99213 when 99214 is supported. A 30-minute office visit for a moderately complex problem routinely supports 99214 by time alone.

3. Missing FS Modifier on Split/Shared Visits

Hospital-based practices commonly forget Modifier FS, triggering downcoding or denial.

4. Telehealth POS/Modifier Mismatches

POS 02 with Modifier 95 vs. POS 10 (patient home) with Modifier 95 — the wrong combination causes a front-end rejection that may never reach A/R aging.

5. Counting Pre/Post-Service Time Outside the Encounter Date

For office visits, only time on the date of the encounter counts. Reviewing labs the day before doesn't add to the E/M level.

How to Update Your Billing Workflow This Quarter

1. Re-train every billing provider on time vs. MDM as separate level pathways
2. Audit 30 E/M notes per provider for under- and over-leveling — both are revenue risks
3. Update charge-capture templates to prompt FS modifier in facility settings
4. Maintain a payer matrix for G2212 vs. 99417 prolonged-service rules
5. Run quarterly E/M level distribution reports by provider against MGMA specialty norms

Conclusion

The 2026 E/M updates are refinements, not a rebuild. But the practices losing money on E/M coding are usually losing it to the foundational 2021/2023 rules they never fully adopted — not the new 2026 wrinkles. Fix the foundation first, then layer on the FS modifier discipline and updated time-counting rules.

If your practice's E/M level distribution looks materially different from your specialty's MGMA benchmarks, TrueClaim RCM's coding team will audit 25 E/M notes per provider for free and quantify the documented over- and under-coding risk.