Large medical stop loss claims have increased by an average of 26.7 per cent annually since 2013, creating significant challenges for captive insurance companies writing employee health benefits, according to Tokio Marine HCC's latest market report. Claims exceeding US$2 million have surged 1,251 per cent from their levels before the Affordable Care Act removed caps on health benefit payments in January 2014. The frequency of large claims increased across all key reimbursement thresholds in 2024, with claims above US$200,000 up 46 percentage points and those exceeding US$2 million rising 247 percentage points. The findings have significant implications for captive insurers that self-insure employee medical benefits and rely on stop loss coverage to protect against catastrophic claims. Rising claim frequencies are driving reinsurance cost increases and forcing captives to reassess retention levels and reserve adequacy. "As one of the largest carriers in the stop loss market, we found 2024 to be a year of significant change," says Jay Ritchie, president and chief executive at Tokio Marine HCC's Accident & Health Group. "The rising frequency of claims, particularly as hospitals seek to recover financially from the pandemic, have been contributing to a hardening market." The top four claim types remain consistent since 2021, led by cancers, cardiovascular diseases, musculoskeletal conditions and digestive diseases. Cancer and cardiovascular claims account for over 48 per cent of total costs in 2024, increasing from 44 per cent in 2021. Emerging claim categories include nervous system diseases, endocrine conditions and infectious diseases, reflecting evolving medical treatment patterns and costs. The report notes that what was once considered catastrophic has become commonplace, fundamentally altering risk assessment for captive insurance operations. Insurers are responding with higher rates and stricter terms as the industry adapts to artificial intelligence capabilities and changing medical cost structures. For captive managers and service providers, the trends signal increased scrutiny of medical coverage strategies and potential restructuring of retention programmes.
