Authors:Nathan Kleinman, Justin Shaneman, and Ian Beren.
Anyone who has selected health insurance in the past decade is probably familiar with the concept of “networks.” Under the rules of an insurance policy, patients will pay a different portion of treatment costs depending on whether specific doctors and hospitals are part of the insurance plan’s approved “network.” Some policies pay none of the costs when the patients gets care out-of-network, others pay some.
While provider networks are created in part to deliver higher-quality care (1,2), the primary purposes of networks are cost management and standardization. Insurers negotiate a standardized set of lower fees from provider groups in return for directing patients to those practices.
From experience with large employers, most of us notice that networks in large health plans are rarely very restrictive because new plan members often want to maintain an existing relationship with their current doctor. Similarly, when switching carriers, employers try to avoid the complaints that result from employees suddenly finding their doctors “out-of-network”. This gives an advantage to plans with a larger, more inclusive network.
Even with large networks of available providers, the tiered structure of in- versus out-of-network can be one more complication that is confusing and frustrating for consumers to navigate (3,4). Also, because many consumers have complained about restricted access, many states have laws requiring that plans admit “any willing provider” (AWP) and “freedom-of-choice” laws to insure access (2). On the basis of AWP laws, plans have even been sued for excluding certain providers that supposedly had eroded plan profitability or advocated too strongly on behalf of patients (5).
Given the apparent all-inclusiveness of these networks, how well do they control costs?
A look at the data
Against this backdrop, we wondered if the savings associated with in-network prices is sufficient to justify the hassle and confusion it can cause for patients. One could argue that if costs to payers are similar, the utility of networks might be questioned.
We selected one type of back procedure (6) and calculated the total episode cost for procedures done in-network and out-of-network in a one-year period from our Research Reference Database (RRDb). We removed the highest cost 5% of episodes and lowest cost 5% from the analysis. Out of 176 back fusions performed in that year, 150 were done in-network and 26 were done out-of-network. These preliminary results were surprising:
|
Type of Service |
Plan Paid Cost |
Member Paid Cost |
Total Cost |
Standard Deviation of Total Cost |
25th Percentile of Total Cost |
75th Percentile of Total Cost |
| In Network Services |
$21,265 |
$1,394 |
$22,658 |
$21,199 |
$6,362 |
$32,237 |
| Out of Network Service |
$9,737 |
$4,373 |
$14,110 |
$13,707 |
$2,585 |
$24,797 |
Patients paid more than three times as much for their out-of-network surgeries due to higher copayments, however, the plan sponsor paid 38% less and the overall cost of care for their episode was 25% less than in-network procedures.
What do we think causes the differences in these numbers? We don’t know for sure. However, we do know that the patients who were treated by in-network providers had more than twice as many charges (claims) per DRG episode than those treated in out-of-network settings. Do in-network providers make up for the lower-negotiated fees by adding more charges (e.g. increasing volume to compensate for lower unit-cost)? That remains to be seen.
More work needs to be done to control for possible differences in the patients who chose in-network versus out-of-network providers for their surgeries. Even so, this finding is surprising enough that we decided to share it. If one major purpose of networks is to control costs, wouldn’t we expect the distribution of costs inside networks to be less variable and consistently lower? Instead we see the opposite.
Take a look at your own data…and let us know. Are you steering employees to the best care (better quality care, more cost-effective care)? What are the networks really getting us?
References
(1) http://www.mainesense.org/Provider-Directory/Request-a-Provider.aspx
(2) http://content.healthaffairs.org/content/14/4/297.full.pdf
(3) http://commonhealth.wbur.org/2012/01/confusion-about-tiered-health-plans/
(4) http://fairhealthconsumer.org/reimbursementseries/installment_two.aspx
(6) Fusions. DRGs included: 453-455,459-460,471-473,490-491.




