CPV code 66190000 designates Loan brokerage services in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
66190000 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 66100000 (Banking and investment services).