National Health Insurance Act Article 26

Upon the occurrence of any of the following events in this Insurance, the Insurer shall readjust the insurance premium rate and present it to the NHIC, which shall report it to the Competent Authority and then to the Executive Yuan for approval, after which the Competent Authority shall make the public announcement:1. The reserve fund for this Insurance drops below the total insurance benefit amount for a month.2. Any addition to or reduction in benefit items, contents, or payment schedules that affects the financial balance of this Insurance.
中文原文 全民健康保險法第26條
本保險有下列情形之一時,由保險人擬訂調整保險給付範圍方案,提健保會審議,報主管機關轉報行政院核定後,由主管機關公告:
一、本保險之安全準備低於一個月之保險給付總額。
二、本保險增減給付項目、給付內容或給付標準,致影響保險財務之平衡。

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