UnitedHealth Group (UNH)

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products comprise approximately 90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue on commercial policies is typically fixed for a 12-month period and is generally priced one to four months before the contract commences. Our revenue on Medicare policies is based on bids submitted in June the year before the contract year. We base the premiums we charge and our Medicare bids on our estimate of future health care costs over the fixed contract period; however, medical cost inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums or bids. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs or utilization rates as a percentage of revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2006 would have been reduced by approximately $170 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too low, they will have a negative impact on our future results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products comprise approximately 90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, medical cost inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs or utilization rates as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2006 would have been reduced by approximately $170 million. In addition, the financial results we

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report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results. Additionally, our participation in the Medicare program is based upon certain assumptions regarding enrollment, utilization, medical costs and other factors. In the event any of these assumptions are materially incorrect, either as a result of unforeseen changes to the Medicare program or otherwise, our results could be materially affected.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products comprise approximately

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90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, medical cost inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs or utilization rates as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2006 would have been reduced by approximately $170 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results. Additionally, our participation in the Medicare program is based upon certain assumptions regarding enrollment, utilization, medical costs and other factors. In the event any of these assumptions are materially incorrect, either as a result of unforeseen changes to the Medicare program or otherwise, our results could be materially affected.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products comprise approximately 90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, medical cost inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2006 would have been reduced by approximately $170 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these

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estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products comprise approximately 90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, medical cost inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2005 would have been reduced by approximately $130 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products comprise approximately 90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, medical cost inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional

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change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2005 would have been reduced by approximately $130 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products comprise approximately 90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, medical cost inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2005 would have been reduced by approximately $130 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products have typically comprised approximately 90% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in

related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2006 would have been reduced by approximately $170 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products (excluding AARP) have typically comprised approximately 80% to 85% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues

for UnitedHealthcare’s commercial insured products, our annual net earnings for 2005 would have been reduced by approximately $130 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products (excluding AARP) have typically comprised approximately 80% to 85% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2005 would have been reduced by approximately $130 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products (excluding AARP) have typically comprised approximately 75% to 80% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before the contract commences. We base the premiums we charge on our estimate of future health care costs over the fixed premium period; however, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1% without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2005 would have been reduced by approximately $130 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which claims are still outstanding. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products (excluding AARP) have typically comprised approximately 75% to 80% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to accurately predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before contract commencement. Services are delivered and related costs are incurred when the contract commences. Although we base the premiums we

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charge on our estimate of future health care costs over the fixed premium period, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1 percent without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2004 would have been reduced by approximately $105 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which we have not received the underlying claims or for which we have received the claims but not yet processed them. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products (excluding AARP) have typically comprised approximately 75% to 80% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to these customers. The profitability of our risk-based products depends in large part on our ability to accurately predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before contract commencement. Services are delivered and related costs are incurred when the contract commences. Although we base the premiums we charge on our estimate of future health care costs over the fixed premium period, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. For example, if medical costs increased by 1 percent without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2004 would have been reduced by approximately $105 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which we have not received the underlying claims or for which we have received the claims but not yet processed them. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

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We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products (excluding AARP) have typically comprised approximately 75% to 80% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to our customers. The profitability of our risk-based products depends in large part on our ability to accurately predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before contract commencement. Services are delivered and related costs are incurred when the contract commences. Although we base the premiums we charge on our estimate of future health care costs over the fixed premium period, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. If medical costs increased by 1 percent without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2004 would have been reduced by approximately $105 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which we have not received the underlying claims or for which we have received the claims but not yet processed them. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.

We must effectively manage our health care costs.

Under our risk-based product arrangements, we assume the risk of both medical and administrative costs for our customers in return for monthly premiums. Premium revenues from risk-based products (excluding AARP) have typically comprised approximately 75% to 80% of our total consolidated revenues. We generally use approximately 80% to 85% of our premium revenues to pay the costs of health care services delivered to our customers. The profitability of our risk-based products depends in large part on our ability to accurately predict, price for, and effectively manage health care costs. Total health care costs are affected by the number of

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individual services rendered and the cost of each service. Our premium revenue is typically fixed in price for a 12-month period and is generally priced one to four months before contract commencement. Services are delivered and related costs are incurred when the contract commences. Although we base the premiums we charge on our estimate of future health care costs over the fixed premium period, inflation, regulations and other factors may cause actual costs to exceed what was estimated and reflected in premiums. These factors may include increased use of services, increased cost of individual services, catastrophes, epidemics, the introduction of new or costly treatments and technology, new mandated benefits or other regulatory changes, insured population characteristics and seasonal changes in the level of health care use. As a measure of the impact of medical cost on our financial results, relatively small differences between predicted and actual medical costs as a percentage of premium revenues can result in significant changes in our financial results. If medical costs increased by 1 percent without a proportional change in related revenues for UnitedHealthcare’s commercial insured products, our annual net earnings for 2004 would have been reduced by approximately $105 million. In addition, the financial results we report for any particular period include estimates of costs that have been incurred for which we have not received the underlying claims or for which we have received the claims but not yet processed them. If these estimates prove too high or too low, the effect of the change in estimate will be included in future results. That change can be either positive or negative to our results.