Table 4. Average Medicare and PPO Payments per RVU for Broad Categories of Physician Services by Private Payer: 1993.

Type of Service Categories	Payer 1			Payer 2
	Medicare	PPO	Differential (Percent)	Medicare	PPO	Differential (Percent)
All Physician Services	$30.11	$46.48	35.2	$29.58	$44.29	33.2
Evaluation and Management	28.57	33.75	15.3	28.21	37.24	24.2
Procedures	30.93	57.96	46.6	31.18	55.81	44.1
Imaging	32.78	55.35	40.8	33.58	57.53	41.6
Tests	29.79	48.19	38.2	29.94	46.25	35.3

NOTE: PPO is preferred provider organization. RVU is relative value unit.

SOURCE: Urban Institute analysis of 1993 claims from the Medicare National Claims History System and two large private payers.