NHS reference costs: a history and cautionary note.

Area of Science:

• Health Economics
• Healthcare Management
• Health Services Research

Background:

• Historically, the National Health Service (NHS) lacked routine cost data collection, unlike private insurance systems.
• Mandated in 1998, NHS trusts began submitting reference costs (estimates of service costs) for health economic evaluations and pricing.
• Traditional top-down reference cost collection suffered from inaccuracies and lack of comparability, undermining credibility.

Purpose of the Study:

• To address limitations in traditional reference cost data by exploring the implementation of patient-level cost data collection.
• To improve the accuracy, comparability, and understanding of healthcare cost drivers within the NHS.
• To assess the potential and challenges associated with a bottom-up approach to costing patient episodes.

Main Methods:

• Transition from aggregate, top-down budget disaggregation to patient-level cost data collection.
• Incorporating bottom-up capture of the 'causality of costs' for individual patient episodes.
• Utilizing a combination of budget disaggregation and patient-specific resource allocation.

Main Results:

• Patient-level cost methods offer potential improvements in data quality and consistency between providers.
• Significant challenges remain in achieving consistency across trusts and fully understanding the implications of cost data changes.
• Many healthcare resources are not attributable to individual patients, questioning the feasibility of purely 'patient-level' costs.

Conclusions:

• Patient-level cost data holds potential for enhanced health economic evaluations but requires substantial investment to realize.
• The utility of patient-level cost data is limited without concurrent understanding of service quality, patient need, and system impact.
• Further research is crucial to validate the quality of new patient-level cost data and guide its effective integration into the healthcare system.