> ## Documentation Index
> Fetch the complete documentation index at: https://medlogprotocol.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Interoperability

> MedLog can be implemented using existing open standards and tooling.

MedLog can be implemented using existing open standards and tooling. The MedLog protocol defines **what
information should be recorded** at each invocation of a medical AI model; existing frameworks provide
complementary ways to **represent, exchange, and analyze** that information.

<Frame>
  ```mermaid theme={null}
  flowchart LR
    REC["MedLog record<br/>(nine fields)"] --> PROV["W3C PROV · OpenLineage<br/>provenance and lineage"]
    REC --> HD["USCDI · FHIR<br/>health data elements"]
    REC --> OTEL["OpenTelemetry<br/>operational telemetry"]
    PROV --> USE["Vendor-agnostic deployment,<br/>multi-institutional analysis"]
    HD --> USE
    OTEL --> USE
  ```
</Frame>

## The layers

<CardGroup cols={2}>
  <Card title="Provenance and lineage" icon="diagram-project" href="/interoperability/provenance">
    [W3C PROV](https://www.w3.org/TR/prov-o/) provides a conceptual model for computational provenance,
    and [OpenLineage](https://openlineage.io/) supports lineage tracking across institutional workflows.
  </Card>

  <Card title="Health data elements" icon="hospital" href="/interoperability/health-data">
    [USCDI](https://isp.healthit.gov/united-states-core-data-interoperability-uscdi) defines high-level
    health data classes and elements, and [FHIR](https://hl7.org/fhir/) provides structured resource
    representations.
  </Card>

  <Card title="Telemetry standards" icon="chart-line" href="/interoperability/telemetry">
    [OpenTelemetry](https://opentelemetry.io/) supports operational telemetry, with collectors that
    transport and store event data across languages and platforms.
  </Card>

  <Card title="EHR audit logs" icon="clock-rotate-left" href="/interoperability/audit-logs">
    Event-level logging already runs at scale in healthcare. EHR audit logs offer a decade of learnings
    for real-world MedLog deployment.
  </Card>
</CardGroup>

These interoperability layers enable **scalable, vendor-agnostic deployments** and lower the barrier to
multi-institutional analyses.

## Explore the mappings

<Card title="Field mapping explorer" icon="share-nodes" href="/interoperability/field-mapping" horizontal>
  Select any of the nine MedLog fields to see related USCDI concepts and FHIR and OpenTelemetry
  representations, each linked to its documentation.
</Card>

<Note>
  The mappings throughout this section are **illustrative, not normative**. They identify related
  concepts rather than exact equivalents, and they are conditional on matching semantics, available
  source information, and local capture policy. None of them replace the canonical MedLog payload.
</Note>