EU MDR Unique Device Identification (UDI): EUDAMED Registration Guide

EU MDR UDI Framework: What Article 27 and Annex VI Require

EU MDR Article 27 establishes the Unique Device Identification (UDI) system for medical devices placed on the EU market. The UDI system under MDR is designed to improve traceability of devices throughout the supply chain, enable more effective field safety corrective actions and recalls, support anti-counterfeiting, and facilitate post-market surveillance through connection to EUDAMED.

The EU MDR UDI system mirrors the structure established by FDA's UDI rule (21 CFR Parts 801 and 830) and the IMDRF UDI guidance, enabling manufacturers to use their FDA-compliant UDI systems to partially satisfy EU MDR UDI requirements. However, there are important distinctions in the required data elements, the EUDAMED registration requirements, and the labeling placement rules that require attention.

Article 27(1) requires that all devices placed on the EU market bear a UDI on their label, or be accompanied by one if the label is impractical. The UDI is composed of two parts: the device identifier (UDI-DI) which identifies the device model and the manufacturer, and the production identifier (UDI-PI) which identifies the specific unit, lot, batch, or serial number. Both components must be present on device labeling, and the UDI-DI must be registered in EUDAMED.

Annex VI Part C defines the specific data elements that manufacturers must provide to EUDAMED for each device. This data submission is separate from the label — EUDAMED contains a searchable database of UDI-DIs with associated device information that healthcare providers, competent authorities, and the public can access.

UDI Issuing Agencies: GS1, HIBCC, and ICCBBA

EU MDR Article 27(2) requires that UDIs be assigned using a coding standard from an issuing agency designated by the European Commission. The three currently designated issuing agencies for EU MDR are GS1, HIBCC (Health Industry Business Communications Council), and ICCBBA (International Council for Commonality in Blood Banking Automation).

GS1 is by far the most commonly used issuing agency globally. GS1 assigns a Global Location Number (GLN) to the manufacturer and assigns device identifiers using the GS1 system (GTIN-14 or GTIN-12 for the UDI-DI). GS1 barcodes and 2D data matrices (GS1 DataMatrix or GS1 QR) are widely used in medical device labeling. If your organization already uses GS1 for FDA UDI compliance, your GS1-based UDI-DI can be used for EU MDR registration in EUDAMED.

HIBCC is used primarily for healthcare supply chain applications and provides the HIBCC UPN (Universal Product Number) coding system. Some manufacturers already using HIBCC for other purposes may use it for UDI assignment.

ICCBBA assigns the ISBT 128 coding system, used primarily for blood, cellular therapy, and tissue products. Most traditional medical device manufacturers will use GS1.

Choosing and registering with an issuing agency: If you have not yet registered with an issuing agency, do so before your UDI implementation project begins — the registration process takes time and the issuing agency must validate your organization's information before assigning identifiers. GS1 registration requires a GS1 Company Prefix, which is a unique numeric prefix assigned to your organization. All your device UDI-DIs will use this prefix as part of the identifier.

EUDAMED Registration: Required Data Elements

Annex VI Part C of EU MDR defines the data elements that must be submitted to EUDAMED for each device UDI-DI. This data submission creates the device record in EUDAMED that links the UDI on the device label to information about the device, its manufacturer, and its regulatory status.

Mandatory data elements (Annex VI Part C, Section 1): The UDI-DI itself, device name and trade name, device risk class, reference number (catalogue number), issuing agency, UDI-DI of higher-level packaging (if applicable), the CE marking status (yes/no), whether the device is a single-use device, whether the device is an implantable device, whether the device is intended for sterile use, whether the device contains or incorporates a medicinal substance, whether the device contains or incorporates a human or animal tissue derivative, and whether the device is intended for point-of-care testing (for IVDs).

Clinical size and packaging data: For devices where clinical size is relevant to use (catheters by French size, needles by gauge), the size must be included in the UDI or the labeling and registered in EUDAMED. The data submission must identify whether size is encoded in the UDI-DI or the UDI-PI.

Economic operator information: The manufacturer's EUDAMED registration (economic operator registration) must be completed before device UDI-DI data can be submitted. Economic operators (manufacturers, authorized representatives, importers, and distributors) must register in EUDAMED separately from device registration.

EUDAMED submission workflow: Data is submitted to EUDAMED either through the EUDAMED web interface (for manufacturers with small product portfolios) or through the EUDAMED Application Programming Interface (API) for bulk submissions. The API requires technical implementation but is more efficient for manufacturers with large catalogs.

UDI Labeling Requirements: Placement, Format, and Standards

EU MDR Article 27(3) requires that the UDI carrier (the barcode, 2D symbol, or RFID tag containing the UDI) be placed on the label of the device and on all higher levels of packaging. For implantable devices, the UDI carrier must also be placed on the implant card and the implant certificate.

Carrier formats: The UDI carrier on device labels may be a linear barcode (1D), a 2D symbol (Data Matrix or QR Code), or an RFID/NFC tag. GS1 DataMatrix is the most commonly used format for medical device labels — it encodes more data in less space than linear barcodes and is more robust to partial damage. For labels with sufficient space, both a 1D barcode (for compatibility with older scanning systems) and a 2D symbol (for data density) are recommended.

Human-readable interpretation (HRI): In addition to the machine-readable UDI carrier, the UDI must be presented in human-readable format on the label. For GS1 identifiers, the HRI includes the Application Identifiers (AIs) and the numeric content. FDA-required HRI and EU MDR-required HRI use similar formats, but verify the specific HRI format requirements against the applicable EU MDR guidance.

Labeling validation: Any change to device labeling to implement UDI — adding a new barcode symbol, changing label layout, adding HRI text — constitutes a labeling change that must go through your design change control process. The updated label must be validated (verified that the UDI carrier is correctly readable by scanners, that the HRI is accurate, and that the label meets all applicable requirements) before the updated labeled device is placed on the market.