CPV code 90523200 designates Bomb-disposal services in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
90523200 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 90523000 (Toxic waste disposal services except radioactive waste and contaminated soil).