10. Where the court has set a duration of confinement exceeding 21 days, the person under confinement must be examined periodically to ascertain whether continued confinement is necessary, and reports of such examinations must be produced at the following times:
(1) 21 days from the date of the decision made by the court pursuant to article 30 of the Civil Code;
(2) every three months thereafter.
The psychiatric examination reports shall be kept by the institution as part of the person’s record.