• John D Goodson, Sara Shahbazi, Karthik Rao, and Zirui Song.
• Wang 625, Massachusetts General Hospital, 15 Fruit St, Boston, MA, 02114, USA. jgoodson1@mgh.harvard.edu.
• J Gen Intern Med. 2020 Jun 1; 35 (6): 1715-1720.

BackgroundSpecialty-to-specialty variation in use of outpatient evaluation and management service codes could lead to important differences in reimbursement among specialties.ObjectiveTo compare the complexity of visits to physicians whose incomes are largely dependent on evaluation and management services to the complexity of visits to physicians whose incomes are largely dependent on procedures.Design, Setting, And ParticipantsWe analyzed 53,670 established patient outpatient visits reported by physicians in the National Ambulatory Medical Care Survey (NAMCS) from 2013 to 2016. We defined high complexity visits as those with an above average number of diagnoses (> 2) and/or medications (> 3) listed We based our comparison on time intervals corresponding to typical outpatient evaluation and management times as defined by the Current Procedural Terminology Manual and specialty utilization of evaluation and management codes based on 2015 Medicare payments.Main Outcome And MeasuresProportion of complex visits by specialty category.Key ResultsWe found significant differences in the content of similar-length office visits provided by different specialties. For level 4 established outpatient visits (99214), the percentage involving high diagnostic complexity ranged from 62% for internal medicine, 52% for family medicine/general practice, and 41% for neurology (specialties whose incomes are largely dependent on evaluation and management codes), to 34% for dermatology, 42% for ophthalmology, and 25% for orthopedic surgery (specialties whose incomes are more dependent on procedure codes) (p value of the difference < 0.001). High medication complexity was found in the following proportions of visits: internal medicine 56%, family medicine/general practice 49%, and neurology 43%, as compared with dermatology 33%, ophthalmology 30%, and orthopedic surgery 30% (p value of the difference < 0.001).ConclusionWithin the same duration visits, specialties whose incomes depend more on evaluation and management codes on average addressed more clinical issues and managed more medications than specialties whose incomes are more dependent on procedures.

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