Table 1.

Sample Mean Duration for History and Physicals for Different E/M Levels

E/M	Mean Minutes	SD
Established patients
Level 1	13.3	5.5
Level 3	19.8	6.8
Level 5	28.9	9.8
New patients
Level 1	15.2	9.3
Level 3	27.4	12.1
Level 5	42.4	15.8

E/M, evaluation and management.