89. Role of courts
(1) On an application (being an application that does not involve considerations relating to life-sustaining treatment) made to it by any interested party, the court may make a declaration as to whether -
(a) an advance healthcare directive is valid,
(b) an advance healthcare directive is applicable, or
(c) a designated healthcare representative is acting in accordance with the relevant powers.
(2) On an application (being an application that involves considerations relating to life-sustaining treatment) made to it by any interested party, the High Court may make a declaration as to whether -
(a) an advance healthcare directive is valid,
(b) an advance healthcare directive is applicable, or
(c) a designated healthcare representative is acting in accordance with the relevant powers.