EHR Vendor Data-Sharing Rules for Medical Devices: What CIOs and CMIOs Need to Know

Federal interoperability mandates have redrawn the boundary between what EHR vendors can legitimately restrict and what now constitutes illegal information blocking when device data is involved.

Why this matters

Consider a scenario that is more common than most health system leaders publicly admit: a regional hospital has deployed patient monitors from one manufacturer, a ventilator management platform from a second, and an EHR from a third. Clinicians want device-generated values — SpO2 trends, ventilator parameters, continuous cardiac data — flowing automatically into flowsheets. The EHR vendor quotes an integration fee that runs into six figures annually, cites a proprietary API architecture, and includes contract language stipulating that device data received through its system cannot be re-exported to competing analytics platforms without a separate licensing agreement.

That scenario used to be a straightforward vendor negotiation problem. Since the ONC's 21st Century Cures Act Final Rule took effect (45 CFR Parts 170 and 171), it is also potentially a federal compliance problem. The rule prohibits health IT developers — including EHR vendors — from engaging in practices that unreasonably restrict access to or exchange of electronic health information (EHI). Device-generated data that becomes part of a patient's designated record set falls squarely within that definition. Contractual restrictions that limit your ability to route that data to a downstream analytics tool, a population health platform, or a successor EHR may now constitute information blocking, not just aggressive deal-making.

For CIOs and CMIOs, the regulatory stakes have sharpened attention on contract language that procurement teams previously treated as boilerplate. Understanding exactly which restrictions are now permissible — and which fall under the rule's eight statutory exceptions that define legitimate limits on sharing — is a core component of every EHR contract negotiation and every device integration project, not a task that can be delegated entirely to legal counsel.

The decisions that shape the outcome

What qualifies as EHI when devices are involved

Not every data point a device generates is automatically covered by the information blocking prohibition. The ONC rule defines EHI broadly as any electronic protected health information in a designated record set. Raw telemetry streamed in real time — before it is captured anywhere in a record — sits in a grayer zone. Once a value is documented in a flowsheet entry, a nursing note, or a discrete observation field in the EHR, it has crossed the threshold into EHI. Your EHR vendor may legitimately argue that real-time streaming infrastructure is a separate technical service, while archived flowsheet data is not. Understanding exactly where that documentation event occurs in your clinical workflow is the first step in identifying where the information blocking rule applies and where it does not.

The eight exceptions and how vendors invoke them

The rule does not prohibit all restrictions — it prohibits unreasonable ones. The eight codified exceptions permit vendors to decline or condition data sharing under specified circumstances: the Preventing Harm Exception, the Privacy Exception, the Security Exception, the Infeasibility Exception, the Health IT Performance Exception, the Content and Manner Exception, the Fees Exception, and the Licensing Exception. EHR vendors frequently invoke the Fees Exception to justify high-volume integration charges, and the Content and Manner Exception to argue they are not required to support every technical format a device manufacturer might prefer. If a vendor cannot identify which exception applies to a specific restriction it is imposing, that is a concrete signal that the restriction may not survive regulatory scrutiny.

API standards and the maturity gap in device data

The ONC rule requires certified EHR technology to expose HL7 FHIR R4-based APIs for patient access and provider-to-provider exchange. However, FHIR's coverage of medical device data is still maturing. The FHIR Observation and Device resources can represent many discrete readings, but complex waveform data, high-frequency physiologic signals, and proprietary device-specific parameters do not yet have fully standardized FHIR representations. This gap means that a fully compliant EHR vendor can truthfully claim that a particular data type is not supported by its certified API — not because it is blocking information, but because the standard has not yet caught up. IHE's Patient Care Device (PCD) profiles and IEEE 11073 medical device communication standards address part of this gap at the integration layer, but they require active adoption on both the device manufacturer's side and the EHR vendor's side, which cannot be assumed at contract signing.

Contract clauses to scrutinize before you sign

Beyond regulatory compliance, EHR vendor contracts routinely contain language about data residency, secondary use, and data portability that constrains how device data is used long after go-live. Three clause types consistently create downstream risk. First, clauses that grant the vendor rights to de-identify and aggregate your patients' device data for their own product development — check whether your patients' consent framework covers this use. Second, clauses that impose per-API-call fees above a volume threshold, which can make high-frequency device data export economically infeasible even when it is technically permitted. Third, clauses that define "data export" so narrowly that bulk extraction for a system migration is priced out of reach. None of these are automatically illegal, but all are far easier to renegotiate before contract execution than at renewal.

Common mistakes

One of the most common errors CIOs make is treating device integration as a pure engineering problem and handing the contract entirely to legal teams who understand HIPAA but may not grasp clinical workflow implications. The result is a contract that technically permits FHIR API access but imposes per-call fees structured so that retrieving high-frequency device data at clinical scale becomes prohibitively expensive — achieving the same effect as a prohibition without technically violating the information blocking rule.

A second frequent mistake is assuming that FDA 510(k) clearance of a medical device implies interoperability. Clearance under the 510(k) pathway addresses safety and substantial equivalence, not data-exchange compatibility. A Class II cardiac monitor cleared under 510(k) may export readings only in a proprietary binary format, requiring a third-party middleware engine before any EHR can ingest the data. Organizations that neglect to budget for that middleware layer — or assume the EHR vendor will absorb it — find integration projects stalled months after go-live, with no contractual recourse.

Third, some organizations sign EHR contracts containing "approved marketplace" clauses, which require any third-party application pulling device data through the EHR's API to be listed on the vendor's certified app directory. This looks like a governance detail until a clinical informatics team wants to deploy a sepsis prediction model trained on continuous device data, only to discover that the marketplace approval process takes 12 to 18 months and involves a revenue-sharing arrangement with the EHR vendor.

Finally, health systems routinely underestimate their own provider-side information blocking exposure. If your organization has accepted contract terms that effectively prevent sharing EHI — including device-derived EHI — with a patient who requests it, you may have inadvertently created a provider-side liability under the rule, entirely separate from any vendor-side violation. Legal and compliance review of integration contracts should explicitly address this dimension.

A practical workflow

1. Audit current EHR contracts for EHI-restriction clauses before any device integration project launches — flag API call limits, data residency terms, secondary-use rights, and export definitions, because each interacts directly with information blocking obligations.

2. Map device data to FHIR resources during project design — convene device and EHR vendor representatives together to identify which data points have established FHIR representations and which will require interim custom mappings or middleware.

3. Request written documentation of which ONC exception the vendor is invoking for any integration fee or format limitation, so your legal team can evaluate whether the exception's specific conditions are genuinely satisfied.

4. Negotiate a data-portability clause specifying machine-readable bulk export of all device-derived EHI within 30 days of contract termination, at no fee beyond documented reasonable labor cost.

5. Verify your middleware vendor's compliance posture — if a third-party integration engine sits between devices and the EHR, confirm it operates under a documented information blocking compliance framework, because data handling at that layer creates its own regulatory exposure.

6. Brief your CMO and compliance officer on provider-side information blocking obligations before go-live, since clinical workflows that restrict or delay patient access to device data can generate liability independent of what your EHR vendor does.

Sources

• ONC Information Blocking — HealthIT.gov
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