Judgment of the General Court (Ninth Chamber) of 30 April 2019.#Francis Wattiau v European Parliament.#Civil service — Social security — JSIS — Reimbursement of medical expenses — Agreement concluded, in particular, between the European Union, Luxembourg and the Entente des hôpitaux luxembourgeois on the scales of fees for hospital care received by JSIS members — Plea of illegality — Principle of non-discrimination on grounds of nationality — First paragraph of Article 18 TFEU — Articles 20 and 21 of the Charter of Fundamental Rights — Article 39 of the Joint Rules on sickness insurance for officials.#Case T-737/17.