The NHDD serves as the key resource for establishing indicator and information standards that enable effective communication and exchange of health information among clinicians, lab technicians, pharmacists, researchers, and administrators. It ensures that the meaning of data is preserved when shared or compiled into reporting systems. The NHDD harmonizes data definitions from various programs and supports the alignment of these definitions with international standards. Its health focus areas include Mental Health, Oral Health, Skin Diseases, Non-communicable Diseases (NCDs), Other Chronic Conditions and Disabilities, Maternal and Child Health, Ophthalmology, Injuries, Emergencies, Communicable Diseases, and Cancer.