This document is an excerpt from the EUR-Lex website
A CELEX number is a unique identifier assigned to a document. It is independent of the language of the document. Most documents on EUR-Lex are assigned a CELEX number.
A CELEX number has different parts, which vary slightly depending on the type of document. The most common case is to have the following 4 parts: Sector – Year – Document type – Document number.
For example, the CELEX number of the EU Water Framework Directive is 32000L0060. It consists of 4 parts:
If you hover over a CELEX number on EUR-Lex you can see the full title of the document.
The year usually describes when the document was adopted.
Each document type has a descriptor. Descriptors can have 1 or 2 letters.
Some common descriptors:
Most CELEX numbers end in 4 digits. These reflect different types of information, e.g.:
There are 3 digits or a letter code after the descriptor. They indicate the number of an article of the Treaty.
Example: 11957E086 is the number for Article 86 of the EEC treaty (1957).
Consolidated versions of Treaties are indicated by the year of consolidation.
International agreements are identified by their publication date.
Example: International agreement 22006A1230(03) was published in the Official Journal on 30 December 2006.
If several agreements are published on the same day, only the number in brackets changes: e.g. 22006A1230 (01).
The year is the one in which the case entered the Court’s register.
The document number is based on the case number issued by the Court of Justice.
Example: 6 2004 TJ0 201 relates to the judgment in the 201st case entered in the register in 2004. The case number is T-201/04.
The first 10 characters are identical to those of the CELEX number of the transposed act, with the exception of the first one, which represents the CELEX sector: 3 (‘Legal acts’) and is replaced by 7 (‘National transposition’). The following 9 characters represent the year, type and unique number of the transposed act.
After the first 10 characters, a 3-letter country code indicates the Member State that is the author of the given national transposition measure.
At the end of the CELEX number, the number following the underscore is the unique identifier from the database of the Secretariat-General of the Commission. These identifiers are of 2 types, the most recent one including a year prefix.
Identifiers with an asterisk are used for display purposes only, when the same unique transposition measure implements more than one legal act. They are not real CELEX numbers. The asterisk replaces the part of the identifier inherited from the transposed acts.
Example: 7*EST_202103476 is displayed for a measure transposing 2 directives.
There are 2 different CELEX numbers attributed to this measure: 72013L0034EST_202103476 and 72014L0095EST_202103476
Corrigenda have the same number as the document they are correcting, with R(xx) added at the end (xx being the number of the corrigendum).
Example: 32009L0164R( 01 ) is the first corrigendum to Directive 32009L0164.
A corrigendum may relate to one or more language versions – or even all of them.
Consolidated texts have the same number as the basic act – but their sector is ‘0’.
It is followed by the date of application of the last amendment to the act.
Example: 02009L0156-20161018
More information on consolidated textsNeed more help?
How CELEX numbers are composed (in English only)
Infographics on CELEX numbers