Unique Device Identification (UDI)?

Assign a GS1 article code to each version or model in order to uniquely identify the product. Use the GTIN-13 for this purpose. Because the healthcare barcodes (GS1-128 and GS1 Data Matrix) have 14 positions, you manually add a leading zero. Or you can use indicator digits to identify packaging levels, in which case you also get 14 positions.

Creating the Basic UDI-DI/GMN is to assign the medical device to a product family. To determine the basic details of a GMN, the GS1 code package is required.

Assign a GS1 article code to each version or model to uniquely identify the product. And assign the DI to a product family (GMN).

To do this, use the GTIN-13. Because the GTIN in healthcare barcodes (GS1-128 and GS1 DataMatrix) has 14 positions, manually add a leading zero. Or you use indicator digits to identify packaging levels to get to 14 positions as well. Further explanation in the document: Guidelines for assigning GTINs

Depending on the requirements of the legislation; add production date, expiry date, batch/lot number or a serial number. Use Application Identifiers (AIs) for this purpose. In the case of software, a software version can be added.

In healthcare, the GS1-128 and the GS1 DataMatrix are the two permitted barcodes worldwide. The manufacturer of the medical device chooses which barcode needs to be on the product.

Supermarket and drugstore medical devices are subject to their own rules. These exceptions are listed in the European Commission's FAQ.

There are devices that are marketed both in retail and via pharmacists. In this case, some EU countries require a specific pharmacist barcode in addition to the GTIN (example Italy-ITALY PARAF, Belgium-CNK code). This means there will be two barcodes on a package.