Inpatient Diagnostic Errors Drove Indemnity Costs

Healthcare providers should evaluate clinical communication protocols as diagnostic errors account for 43% of total indemnity claims.

Updated on Oct. 6, 2026 in Healthcare

Bold flat-color editorial illustration of stacked geometric blocks suggesting an institutional corridor, representing clinical oversight systems. — Diagnostic errors accounted for 43% of total medical indemnity claims in 2025, driven by communication gaps in inpatient hospital settings. AI Illustration. Upload story photo >

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Between 2021 and 2025, diagnostic errors represented 28% of closed claims reviewed by Coverys, with medical-surgical units accounting for 68% of those events. These failures in clinical oversight significantly impacted liability costs, which rose as the medical professional liability combined ratio exceeded 105% in 2025.

Why it matters

Inpatient diagnostic errors stem primarily from communication breakdowns and heavy provider workloads, creating substantial financial risk for facilities. As medical professional liability premiums rose for nearly 40% of the market in 2025, mitigating these errors has become a central focus for maintaining operational margins.

Diagnostic errors constituted 28% of all closed claims in the Coverys dataset, ultimately accounting for 43% of the total indemnity paid. These events carried high severity, with 55% resulting in patient death and 19% causing high-severity permanent injury.

The players

Coverys

A Massachusetts-based medical malpractice insurer that holds a 3.8% market share.

The details

Diagnostic failures in medical-surgical units are frequently exacerbated by periodic monitoring, which creates oversight gaps compared to the continuous surveillance found in critical care. Compounding this, over 90% of reviewed events involved clinical decision-making factors, while 75% of patients had underlying comorbidities that complicated diagnostic accuracy. Breakdowns in information and communication between staff members, particularly hospitalists involved in 37% of cases, remain the primary systemic vulnerability.

The analysis covered 403 closed inpatient diagnostic error events occurring between 2021 and 2025.
The medical professional liability combined ratio exceeded 105% in 2025.

Market Landscape

These diagnostic error claims track with the broader 2025 medical professional liability insurance market cycle, which saw premiums rise for nearly 40% of the market. This development marks a departure from periods of lower volatility, signaling increased financial risk for hospital operators.

Operators should review current staffing ratios and communication handoff protocols in general medical-surgical units, where diagnostic risk is concentrated. Because these errors are heavily tied to clinical decision-making, management should prioritize standardized diagnostic checklists and monitoring protocols.

The takeaway

Diagnostic errors represent a significant liability and mortality risk, particularly in general ward settings with periodic rather than continuous monitoring. Administrators should track the frequency of diagnostic-related claims within their own facilities to benchmark against these industry indemnity levels.