Artikel 6

1. The costs of medical care borne by the institution of the place of temporary residence by virtue of the provisions of Article 4:
(a) shall not give rise to any refunds by the competent institution;
(b) shall be refunded in full by the competent institution on the presentation of proof of the actual expenditure, excluding administrative costs;
(c) shall be refunded by the competent institution, in accordance with special arrangements; depending on whether the Contracting Parties concerned have agreed to apply the provisions of subparagraph (a) or subparagraph (b) or subparagraph (c) of this paragraph.
2. In the relations between Contracting Parties which have agreed to apply the provisions of paragraph 1, subparagraph (b), the competent institution shall refund the actual amount of the costs of medical care borne by the institution of the place of temporary residence, by virtue of the provisions of Article 4, as shown in the accounts of that institution. The amount of the costs to be refunded may not exceed the actual amount for identical medical care that would have been provided to beneficiaries normally covered by the institution of the place of temporary residence.
3. In the relations between Contracting Parties which have agreed to apply the provisions of paragraph 1, subparagraph (c), the competent institution shall refund the amount of the costs of medical care borne by the institution of the place of temporary residence, by virtue of the provisions of Article 4, in accordance with the specific arrangements reached between these Parties, notably on the basis of lump-sum payments determined by mutual agreement between the competent authorities of the Contracting Parties concerned, from all the appropriate references drawn from the data available.