Objectives: To assess dental hygienist awareness of health insurance coverage for orthodontic treatment of patients with cleft lip and palate or congenital craniofacial anomalies. Methods: An online survey was conducted with 447 dental hygienists from the Seoul and Gyeonggi regions. The questionnaire included items regarding general characteristics, levels of awareness, and previous education. Data were analyzed using descriptive statistics, t-tests, analysis of variance, Scheffé’s post hoc tests, and chi-square tests. Results: The levels of awareness significantly differed based on sex, years of experience, type of institution, and clinical department. Hygienists with more experience or those in orthodontic departments had higher awareness (p<0.05). Greater than 50% had not received recent education related to insurance and relied on colleagues for information. Despite limited education, there was high demand and a willingness to participate in future programs. Conclusions: Regular and practical education tailored to career stage and clinical role is essential to increase awareness among dental hygienists. Policylevel support and standardized educational resources are required to improve professional competence and ensure better access to care for patients with congenital craniofacial abnormalities.