E/M frequency data for hospitalists

Hospitalists became a recognized specialty by CMS starting in 2017, and we now have frequency E/M data for the specialty. There are probably still physicians who have not switched their specialty designation.  Physicians self-elect their specialty designation with Medicare and other payers. Many hospitalists are family medicine or internal medicine physicians by training, working as hospitalists.

The data below is from 2021, released in late 2022.

Initial inpatient services, 99221–99223

For hospitalists, 79% of their initial inpatient services are billed as level 3 visits, compared to 62% for family medicine and 71% for internal medicine. I review the E/M data each year, and this rate of level three initial hospital services is one of the highest of any specialty group.

Pulmonary doctors bill 99223 for 67% of their visits, cardiologists bill 99223 for 55% of their visits. Physicians who are designated as critical care/intensivists bill 65% of their initial inpatient visits as 99223s. Infectious disease physicians bill 56% of their initial inpatient services as 99223s.

This data is from 2021, when initial hospital services code 99223 required all three key components, a comprehensive history, comprehensive exam and high complexity MDM.  If I were involved with a hospitalist group, I would certainly track this metric by physician and include high level E/M services in my audit plan for the year.

Subsequent hospital services, 99231—99233

Before we look at subsequent hospital services by specialty, let’s turn back the clock. The earliest frequency data I’ve saved is 2000.

Between 2000 and 2019, the frequency of using 99231 dropped for both specialties, and the frequency of using the highest-level subsequent hospital visit increased for both specialties, considerably. The middle code, 99232, the “safe, fly-under-the-radar” code decreased for internal medicine and increased for family medicine.

Now, let’s look at current data and compare FM, IM and hospitalists. Hospitalists have the lowest frequency of using 99231, and the highest frequency of using 99233. In 2021, the year of this data, subsequent visits required two of the three key components.

Observation, and admission and discharge on the same day, 99218—99220, 99234—99236

These are consistent with inpatient admissions.  Hospitalists report higher levels of initial services for observation admissions, and for admission and discharge on the same calendar date. It does lead to the question, are hospitalists managing sicker patients, or documenting them more completely or billing them at too high a level?

There is frequency data for some other specialties on the site. Search “frequency” in the search box to find it.

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