# Regulation (EC) No 2195/2002 of the European Parliament and of the Council of 5 November 2002 on the Common Procurement Vocabulary (CPV) (Text with EEA relevance), Division 2: The main vocabulary is based on a tree structure comprising codes of up to nine digits associated with a wording that describes the supplies, works or services forming the subject of the contract.

Extent: E+W+S+N.I.

The numerical code consists of 8 digits, subdivided as follows:
the first two digits identify the divisions (XX000000-Y),
the first three digits identify the groups (XXX00000-Y),
the first four digits identify the classes (XXXX0000-Y),
the first five digits identify the categories (XXXXX000-Y).
Each of the last three digits gives a greater degree of precision within each category.
A ninth digit serves to verify the previous digits.

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Source: https://www.legislation.gov.uk/eur/2002/2195/annex/I/division/1/division/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2002-2195/annex-I/division-1/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.