Regulations Governing the National Health Insurance Medical Care Article 21

The Insurance ward expenses shall be calculated from the first day of hospitalization (including the first day) till the day of discharge (excluding the day of discharge).
中文原文 全民健康保險醫療辦法第21條
本保險病房費用,自保險對象住院之日起算,出院之日不予計入。

English translation for reference only; the Chinese text prevails. Not legal advice.