Canada’s health systems began shifting from paper charts to electronic health records decades ago. These records hold patients’ critical health information, including medications, diagnoses, clinical notes, test results, specialist consults and plans for care.

Our research, published today in the Canadian Medical Association Journal, raises major concerns about the state of these electronic health records nationwide.

In most provinces and territories, information is currently siloed in separate software programs in different offices, designed by multiple vendors with differing standards. This fragments patients’ health records across services and leaves clinicians without the information they need to provide safe care.

This is harming patients, costing taxpayers $9.4 billion annually and hindering health-system improvement.

Canada’s missed opportunity

Ideally, patients’ health information should follow them over time and across locations. Some might assume that’s how it works now. After all, hotel chains remember whether we prefer foam or feather pillows, no matter what country we are in. Uber ratings follow us everywhere.

Unfortunately, in health care, things aren’t so seamless. In the rush to abandon paper charts and transition to electronic records, Canada missed a major opportunity for standardization.

Without an overarching plan, clinics, hospitals and jurisdictions chose from dozens of incompatible platforms sold by........

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