Financial Viability of Emergency Department Observation Unit Billing Models.

Area of Science:

• Health Services Research
• Healthcare Economics
• Hospital Administration

Background:

• Observation services determine the need for inpatient admission but are often unstructured.
• Emergency department observation units (EDOUs) offer a protocolized, efficient alternative.
• Current policy barriers limit EDOU growth, particularly regarding professional billing models.

Purpose of the Study:

• To analyze the financial implications of two common EDOU professional billing models: the one-service and two-service models.
• To model the financial sustainability of EDOUs under varying patient encounter volumes and staffing costs.

Main Methods:

• A Monte Carlo simulation was developed using US clinical practice data.
• The model incorporated peer-reviewed literature, national surveys, and payer data.
• Annual staffing costs and professional service payments were simulated for both billing models.

Main Results:

• The one-service model resulted in an average annual net loss of $315,382.
• The two-service model yielded an average annual net profit of $37,569.
• The two-service model is financially sustainable with over 20 daily encounters; the one-service model is never profitable.

Conclusions:

• The one-service model requires hospital subsidies to be financially viable.
• Regulatory and operational hurdles impede the adoption of the two-service model.
• Policymakers should remove barriers to facilitate the universal adoption of the two-service billing model for EDOUs.