UKCA Unique Device Identification (UDI) requirements align closely with EU MDR principles. However, they are regulated under UK MDR 2002 by the MHRA. Manufacturers must assign a UDI to medical devices placed on the Great Britain market and ensure proper labelling. Additionally, they must maintain traceability through registration with the MHRA. In this blog, we have presented the UKCA UDI requirements for medical devices.
What is UDI system for medical devices?
The Unique Device Identification (UDI) system is a global regulatory framework that assigns a standardized, unique code to every medical device. It is a numeric or alphanumeric code placed on medical device labels, packaging, and sometimes directly on the device. This enables clear identification, traceability, and safety monitoring throughout its lifecycle. This code must appear in both human-readable text and machine-readable format (such as a barcode or DataMatrix) on the device label, packaging, or directly on the device if reusable. Regulators require manufacturers to register UDI data in centralized databases, thereby enabling better post-market surveillance, recall management, and patient safety. The UDI has two components:
- UDI-DI (Device Identifier): Static, model-specific code that identifies the device type.
- UDI-PI (Production Identifier): Dynamic details, such as lot number, serial number, manufacturing date, and expiry date.
Key UKCA UDI requirements
As per UKCA UDI requirements, manufacturers must assign a Unique Device Identifier (UDI) to each medical device model intended for the UKCA market. This identifier ensures that the device can be distinctly recognized across its lifecycle. It is a legal requirement under MHRA regulations for traceability and compliance. We have presented in details the UKCA UDI requirements for medical devices.
1. UDI assignment
Manufacturers are required to assign a UDI to every medical device placed on the UK market under UKCA rules. The UDI is composed of two elements: the Device Identifier (UDI-DI), which is specific to the model/version, and the Production Identifier (UDI-PI), which captures batch or serial details. This dual structure ensures both product-level and production-level traceability. It is a mandatory requirement under MHRA regulations, designed to strengthen device identification and safety. Without proper UDI assignment, a device cannot be legally marketed in Great Britain.
2. Labeling obligations
The UDI must be displayed on the device label, packaging, and in some cases directly on the device itself. It must appear in both human-readable text and machine-readable format, such as barcodes, QR codes, or DataMatrix. Reusable or implantable devices often require permanent direct marking to ensure durability and compliance. This labeling standard ensures that healthcare providers, patients, and regulators can easily identify and scan devices. Failure to meet labeling obligations can result in regulatory action or restricted market access.
3. Registration with MHRA
Manufacturers must register UDI information in the MHRA database as part of device registration. This includes submitting both UDI-DI and UDI-PI details to ensure full traceability. If the manufacturer is located outside the UK, a UK Responsible Person must handle the registration process. The MHRA database acts as the central repository for device identification, supporting regulatory oversight. Accurate registration is critical for compliance, audits, and post-market surveillance activities.
4. Traceability and post-market surveillance
The UDI system enables tracking of devices throughout the supply chain, from manufacturer to patient. It supports effective recall management, adverse event reporting, and vigilance activities. Manufacturers must maintain UDI records in their technical documentation and ensure they are accessible during audits. This traceability framework strengthens patient safety by ensuring rapid identification of affected devices. It also helps healthcare providers manage inventory and monitor device performance in real-world use.
5. Transition and CE acceptance
CE-marked devices with UDI are still accepted in Great Britain until 30 June 2030. However, manufacturers must plan for full compliance with UKCA UDI requirements to ensure long-term market access. This transition period allows companies to align existing CE-marked devices with UKCA requirements. It is advisable to update technical files and labeling now to avoid last-minute compliance challenges. By preparing early, manufacturers can ensure seamless continuity in the UK market beyond the CE acceptance deadline.
Benefits of UKCA UDI requirements
- Enhanced traceability: The UDI system ensures that every medical device can be uniquely identified across its lifecycle. This makes it easier to track devices through manufacturing, distribution, and clinical use. As a result, regulators and healthcare providers can quickly pinpoint affected devices during recalls or safety alerts.
- Improved patient safety: By standardizing device identification, UDI reduces the risk of errors in device selection and usage. Healthcare professionals can verify device details instantly through labels and databases. This strengthens vigilance reporting and supports faster corrective actions when adverse events occur.
- Regulatory oversight: UDI data registered with the MHRA provides regulators with a centralized source of device information. This enables more effective monitoring of compliance and post-market performance. It also supports audits and inspections by ensuring manufacturers maintain accurate, accessible records.
- Supply chain efficiency: Machine-readable UDI labels streamline inventory management and hospital stocking processes. Devices can be scanned and tracked automatically, reducing manual errors and administrative burden. This efficiency lowers costs and improves operational discipline across the healthcare supply chain.
- Market continuity: The UKCA UDI framework aligns closely with international standards, easing global compliance for manufacturers. It ensures that devices remain legally marketable in Great Britain beyond the CE acceptance deadline. By adopting UKCA UDI guidelines early, companies secure uninterrupted access to the UK market and build long-term resilience.
MHRA registration of UDI
The Medicines and Healthcare products Regulatory Agency (MHRA) functions as the central UDI database for medical devices placed on the UK market under UKCA rules. Manufacturers must submit UDI information, including both the Device Identifier (UDI-DI) and Production Identifier (UDI-PI), to the MHRA database during device registration. This database enables regulators, healthcare providers, and patients to access accurate device details. This supports traceability, post-market surveillance, and rapid response in case of recalls or safety concerns. Notably, MHRA registration is a part of UKCA UDI requirements. We have presented the steps of the MHRA UDI registration process.
- Assign a UDI: Manufacturers must generate a Unique Device Identifier (UDI) for each device model, including both the Device Identifier (UDI-DI) and Production Identifier (UDI-PI).
- Prepare device labelling: Ensure the UDI is displayed on labels, packaging, and where required, directly on the device in both human-readable and machine-readable formats.
- Compile UDI data: Document UDI-DI and UDI-PI details in technical files and prepare them for submission to the MHRA database.
- Submit to MHRA: Register the device and its UDI information with the MHRA database. Non-UK manufacturers must use a UK Responsible Person.
- Maintain compliance: Keep UDI records updated, ensure traceability logs are accessible, and support post-market surveillance and audits.
Role of manufacturer in UKCA UDI requirements
- Assigning UDI codes: Manufacturers must generate and assign a Unique Device Identifier (UDI) to each device model/version. This includes both the UDI-DI (Device Identifier) and UDI-PI (Production Identifier).
- Proper labelling: Manufacturers are responsible for ensuring the UDI appears on the device label, packaging, and in some cases directly on the device. Labels must be both human-readable and machine-readable (barcode, QR code, or DataMatrix). Moreover, reusable or implantable devices require permanent direct marking to maintain compliance.
- MHRA registration: Manufacturers must submit UDI data to the MHRA database during device registration. This includes uploading UDI-DI and UDI-PI details for traceability. If the manufacturer is outside the UK, a UK Responsible Person must handle this responsibility.
- Maintaining technical documentation: Manufacturers must keep UDI records in their technical files and conformity assessment documentation.
- Ensuring traceability and surveillance: Manufacturers must use UDI to enable full traceability across the supply chain. This supports effective recall management, adverse event reporting, and vigilance activities.
Hence, the UKCA UDI requirements establish a robust framework for medical device identification, traceability, and patient safety in Great Britain. By mandating clear UDI assignment, standardized labeling, and MHRA database registration, the system ensures that devices can be tracked seamlessly across their lifecycle. For easily securing the UKCA mark, drop an email at [email protected] or call/Whatsapp on 9996859227.
