Arizona Employees Enrolled in Each Employer Healthcare Delivery Plan Type, 2002–2010

• HMO enrollment fell sharply early in the decade, but is projected to maintain a market share of approximately 20% through 2010. "Other," primarily indemnity plans, which comprised less than 10% of the insurance market at the beginning of the decade were all but extinct by 2004.
• As HMO enrollment fell, PPO plans gained market share and are expected to account for about 70% of all ESI through 2010.
• The growth of PPO plans and high-deductible CDHPs, and declining HMO enrollment have contributed significantly to the increase in out-of-pocket costs borne by individuals as employers seek to hold down their health insurance related costs and create incentives for consumers to make wiser - or at least more cost-effective - choices about their care.

Notes:

1. Based on Large Employers and Small Employers Primary Market Segments.