Clarification from the agency The IHS is required by law to give absolute preference to qualified applicants who meet the Secretary of the Interiors definition of Indian for appointment to vacancies within the IHS in accordance with established IHS policy as outlined in the Indian Health Manual Part 7 Chapter 3. Videos Duties Help Total Compensation Package - Check out IHSs outstanding total compensation package for this job Dental Hygienist Total Compensation | Pay ihs.gov. Practiced in a State or foreign jurisdiction that did not license that particular field or did not allow special eligibility to take a licensure examination for those who did not graduate from an accredited educational program; provided that such persons show evidence of training, experience, and competence as determined by OPM or the employing agency.