Here's an excerpt from the summary of the rule - you can see that the E/M Level section is following the AMA definition:
Evaluation and Management (E/M) Visits
As part of the ongoing updates to E/M visit codes and related coding guidelines that are intended to reduce administrative burden, the AMA CPT Editorial Panel approved revised coding and updated guidelines for Other E/M visits, effective January 1, 2023. Similar to the approach we finalized in the CY 2021 PFS final rule for office/outpatient E/M visit coding and documentation, we finalized and adopted most of these AMA CPT changes in coding and documentation for Other E/M visits (which include hospital inpatient, hospital observation, emergency department, nursing facility, home or residence services, and cognitive impairment assessment) effective January 1, 2023. This revised coding and documentation framework includes CPT code definition changes (revisions to the Other E/M code descriptors), including:
- New descriptor times (where relevant).
- Revised interpretive guidelines for levels of medical decision making.
- Choice of medical decision making or time to select code level (except for a few families like emergency department visits and cognitive impairment assessment, which are not timed services).
- Eliminated use of history and exam to determine code level (instead there would be a requirement for a medically appropriate history and exam).
We finalized the proposal to maintain the current billing policies that apply to the E/Ms while we consider potential revisions that might be necessary in future rulemaking. We also finalized creation of Medicare-specific coding for payment of Other E/M prolonged services, similar to what CMS adopted in CY 2021 for payment of Office/Outpatient prolonged services. These services will be reported with three separate Medicare-specific G codes.
Split (or Shared) E/M Visits
For CY 2023, we finalized a year-long delay of the split (or shared) visits policy we established in rulemaking for 2022.
This policy determines which professional should bill for a shared visit by defining the “substantive portion,” of the service as more than half of the total time. Therefore, for CY 2023, as in CY 2022, the substantive portion of a visit is comprised of any of the following elements:
- History.
- Performing a physical exam.
- Medical Decision Making.
- Spending time (more than half of the total time spent by the practitioner who bills the visit).
As finalized, clinicians who furnish split (or shared) visits will continue to have a choice of history, or physical exam, or medical decision making, or more than half of the total practitioner time spent to define the “substantive portion” instead of using total time to determine the substantive portion, until CY 2024.