A significant portion of unpaid medical bills in Kuala Lumpur are attributable to non-citizen patients who are either undocumented migrants or stateless individuals. Specifically, over 80 percent of outstanding medical costs stem from this vulnerable population. This indicates a substantial financial burden related to healthcare access for those without legal documentation or recognized nationality within Malaysia. The situation highlights challenges in providing healthcare to non-citizens and recovering costs for services rendered. Further investigation is needed to understand the underlying reasons for non-payment, which may include financial hardship, lack of awareness of billing procedures, or inability to access support systems. This issue poses a growing concern for healthcare providers in Kuala Lumpur and necessitates exploring sustainable solutions for equitable healthcare access and financial responsibility.