National Health Insurance Act Article 49

In the case where the low-income households eligible under the Public Assistance Act make medical visits, the central competent authority in charge of social affairs shall prepare a budget to pay for that, according to Articles 43 and 47. However, those who do not abide by referral provisions shall not receive subsidies except for those in special situations.
中文原文 全民健康保險法第49條
符合社會救助法規定之低收入戶成員就醫時,依第四十三條及第四十七條規定應自行負擔之費用,由中央社政主管機關編列預算補助。
但不經轉診於各級醫院門診就醫者,除情況特殊者外,不予補助。

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