CPV code 90523000 designates Toxic waste disposal services except radioactive waste and contaminated soil in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
90523000 sits under 90520000 (Radioactive-, toxic-, medical- and hazardous waste services) and groups 3 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.