Utilization characteristics of spinal interventions.

Area of Science:

• Spine interventions and healthcare utilization analysis.
• Medical economics and provider practice patterns.

Background:

• Increasing rates of spinal injections noted in Veterans Affairs and Medicare populations.
• Variations in spinal injection utilization by geography, specialty, and practice setting observed.
• Medicare data shows a small physician group performs a large volume of injections; private insurance patterns are unknown.

Purpose of the Study:

• To determine if a small number of providers account for a high percentage of interventional spine procedures in privately insured individuals.
• To quantify any identified disproportionate utilization patterns.
• To assess if provider specialty influences these utilization patterns.

Main Methods:

• Descriptive analysis of utilization patterns from the Medstat MarketScan database (2003-2007).
• Inclusion criteria: patients aged 18-99 receiving spinal interventional procedures (epidural steroid injections, facet blocks, etc.).
• Analysis of nearly 200,000 patients and over 20,000 providers, examining procedure counts per provider and specialty.

Main Results:

• The top 10% of providers performed 36.6% of all spinal procedures, with the top 20% performing 57.6%.
• High-utilizing providers performed 9 times more procedures than low-utilizing providers and 4.5 times more than the median.
• This pattern of disproportionate utilization by a few providers was consistent across all nine major specialties studied.

Conclusions:

• A small subset of healthcare providers is responsible for a significantly high volume of interventional spine procedures.
• This marked overutilization by a minority of providers is a dominant characteristic of utilization across all specialties.
• Findings highlight potential areas for practice pattern review and resource allocation within interventional spine care.