Digital health records: portability and its limits

Electronic records improved legibility, retrieval and safety checks within institutions. They did far less for moving information between them.

Why interoperability is hard

• Systems were built independently with different data models.
• Even shared standards are implemented differently.
• Clinical terminology differs between systems and languages.
• Commercial incentives do not favour easy export.
• Legal frameworks restrict cross-border data movement.

The fourth point is rarely stated but shapes the landscape. Data that moves easily makes switching providers easier too.

What patient portals give you

• Viewing test results, often with a delay.
• Appointment booking and reminders.
• Prescription requests.
• Messaging in some systems.
• Partial access to notes, varying widely.

Portals show a subset chosen by the provider. What you see is not necessarily the whole record.

Portal access is not permanent

• Access may end when you leave the health system.
• Providers change platforms and historical data sometimes does not migrate.
• Insurance-linked portals close when the policy ends.
• Accounts can be deactivated after inactivity.

This is the argument for downloading rather than relying on continued access.

Download while you can

• Export results, letters and summaries periodically.
• Save in a format you can open without the original system.
• Store outside the provider's platform.
• Do this before any move or change of insurer.

The second point matters. Proprietary formats become unreadable once you lose access to the software that created them.

Imaging in digital systems

• Images are usually stored separately from the clinical record.
• A standard format exists and is widely used.
• Files are large, so transfer may need physical media.
• Viewing software is often bundled with exports.
• Portals may show reports but not images.

The last point catches people out. Seeing your scan report online does not mean you have the scan.

Health apps and personal record tools

• Useful for organising and carrying information.
• Some can import from certain health systems.
• Data quality depends entirely on what you enter.
• They are not source documents.
• Check the privacy terms before entering sensitive data.

The fifth point warrants attention. Health data held by consumer applications may not carry the protections that medical records do.

Wearables and monitoring data

• Can be useful for tracking trends.
• Accuracy varies substantially between devices and measures.
• Clinicians may or may not accept the data.
• Present it as a trend, not as a diagnosis.
• Some measures are clinically validated and others are not.

Bringing months of raw data to a consultation rarely helps. Bringing a summarised pattern sometimes does.

Regional health record networks

• Some countries operate national or regional shared records.
• These can work well within their boundaries.
• They rarely extend beyond national borders.
• Access rules for foreign residents vary.
• Ask what exists where you live.

Where such a system exists and you are eligible, registering is worth doing early rather than during a crisis.

Cross-border initiatives

• Some regional groupings have pilot arrangements for summary exchange.
• Coverage is limited and uptake uneven.
• They typically cover a basic dataset only.
• They do not remove the need for personal copies.

Practical approach

• Register for portals where available.
• Download regularly.
• Keep your own summary independent of any system.
• Store documents in open, durable formats.
• Maintain a physical copy of essentials.

The physical copy is the layer that survives device failure, dead batteries and no connectivity.

Scanning and file formats

• Scan at a resolution that keeps text readable.
• Prefer widely supported document formats.
• Avoid formats tied to a single application.
• Keep file names descriptive with dates.
• Check periodically that old files still open.

The last habit catches format obsolescence before it becomes a problem, which matters for records you may need decades later.

When systems change

• Providers migrate to new platforms periodically.
• Historical data does not always migrate completely.
• Announcements about migration are easy to miss.
• Download before any announced change.

Migration is one of the quieter ways records disappear, because nothing looks broken until you go looking for something old.

Sharing records with a new clinician

• Ask how they prefer to receive documents.
• Secure transfer is better than ordinary email.
• Some clinics have upload portals.
• Physical copies remain acceptable everywhere.
• Confirm receipt rather than assuming.

Security considerations

• Health data is sensitive and attractive to attackers.
• Use strong authentication on any account holding it.
• Be cautious about sharing via messaging platforms.
• Encrypt storage where practical.
• Think about who should have access if you cannot act.

The last point is a planning question rather than a technical one, and it is easy to postpone indefinitely.

Access for someone acting on your behalf

• Portals rarely accommodate proxy access well.
• Sharing credentials is usually against the terms of use.
• Some systems offer formal delegated access.
• Ask what the proper mechanism is rather than improvising.

Arranging this properly matters for older relatives and for anyone who may need someone to act during illness.

Exports that are not what they appear

• Some exports contain only a summary view.
• Check that the file contains what you expected.
• Compare against what the portal displays.
• Ask for a full export if the file is thin.

An export that downloads instantly for a long history is usually incomplete.

Connectivity cannot be assumed

• Emergencies happen where networks are poor.
• Cloud-stored records are unavailable without a connection.
• Keep essential documents stored locally on a device.
• Keep a paper card as the final fallback.

The layered approach is not redundancy for its own sake. Each layer fails in different circumstances.

Summary

Digitisation improved records within institutions but did little for transfer between them, partly because easy export is commercially unattractive. Portal access is not permanent, so download regularly and store in formats readable without the original system. Seeing a scan report online does not mean you have the images. And keep a physical copy of essentials, because it survives dead batteries and no connectivity.

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