The Trade and Cooperation Agreement between the EU and the UK provides for a continuation of healthcare rights when on a temporary stay in a State covered by the Agreement. Under the agreement a person’s competent State will issue them with ‘an entitlement document’, in the case of the UK a Global Health Insurance Card (GHIC), to allow them to access these healthcare rights. The State which issues the relevant GHIC\EHIC is the State in which a person makes their social security contribution or receives a social security contributory payment.
Furthermore, under the Agreement, residents of the UK, including Northern Ireland, can continue to use their current UK EHIC to access necessary care while on a temporary stay in an EU Member State, until the card reaches its expiry date. At that point, residents of Northern Ireland may obtain a new Global Health Insurance Card (GHIC), issued by the UK Government. Further information can be found on the NHS website, on how residents of Northern Ireland can apply for a new GHIC.
Also, in certain circumstances, persons who are frontier workers will be entitled to an EHIC under the terms of the EU UK Withdrawal Agreement.