What is UDI?
A UDI is a unique numeric or alphanumeric code that consists of two parts:
- a device identifier (DI), a mandatory, fixed portion of a UDI that identifies the labeler and the specific version or model of a device, and
- a production identifier (PI), a conditional, variable portion of a UDI that identifies one or more of the following when included on the label of a device:
- the lot or batch number within which a device was manufactured;
- the serial number of a specific device;
- the expiration date of a specific device;
- the date a specific device was manufactured;
- the distinct identification code required by §1271.290(c) for a human cell, tissue, or cellular and tissue-based product (HCT/P) regulated as a device.
As part of the UDI system, the FDA is also creating the Global Unique Device Identification Database (GUDID) which will include a standard set of basic identifying elements for each device with a UDI. Most of this information will be made available to the public so that users of a medical device can easily look up information about the device. The UDI does not indicate, and the database will not contain, any information about who uses a device, including personal privacy information.