This is in reference to the French statute (« code » being a statute) on public contracts / public procurement, supply service and works. Cf. Article 1 provides http://www.finances.gouv.fr/reglementation/CMP/code/ :

« Les marchés publics sont des contrats passés, dans les conditions prévues au présent code, par les collectivités publiques en vue de la réalisation de travaux, fournitures et services. »

Your problem is how to translate « Code », if at all and « marchés publics ».
Taking the last one first, I prefer « public procurement » to « public contracts ».
As for the first one, depending on the rest of your text, then you may like one of the following :

- French Code on Public Procurement
- French Public Procurement Code
- Code des marchés publics (French public procurement statute/act).

I would avoid the use of « regulations » as they are not the same thing as an act of parliament. I would also avoid using “code” without preceding it by French, otherwise it makes it sound like a code of conduct, rather than a piece of legislation.

http://europa.eu.int/eur-lex/fr/com/dat/2000/fr_500PC0275.ht...

500PC0275
Proposition de directive du Parlement européen et du Conseil relative à la coordination des procédures de passation des marchés publics de fournitures, de services et de travaux.

http://europa.eu.int/eur-lex/en/com/dat/2000/en_500PC0275.ht...

500PC0275
Proposal for a Directive of the European Parliament and of the Council on the coordination of procedures for the award of public supply contracts, public service contracts and public works contracts.

http://europa.eu.int/comm/internal_market/en/publproc/voc/cp...
It would appear that the very question of terminology is itself an issue in the EU, or at least was as recently as 3. August 2001.
Public procurement: Commission proposes obligatory use of the "Common Procurement Vocabulary"
The European Commission has adopted a proposal for a Regulation of the European Parliament and of the Council which would establish the Common Procurement Vocabulary (CPV) as the only classification system used for public procurement in the EU. Currently it is just one of several nomenclatures available for use by public awarding authorities in the EU.

http://www.juridik.org/europrocure/fr.html

You may find the (multilingual) Euro Procure site of use for information, if not for vocabulary…. (The English version has no doubt not been translated by a native speaker – beware !).