(1) For the purposes of this Chapter "medical treatment" means medical, surgical or rehabilitative treatment (including any course of diet or other regimen).
(2) Regulations may provide that where a person receives medical treatment as an in-patient for two or more distinct periods separated by an interval or intervals of less than a specified duration, he shall be treated for the purposes of this Chapter as receiving it continuously from the beginning of the first period until the end of the last.