Health informatics (also called health care informatics, healthcare informatics, medical informatics, nursing informatics, clinical informatics, or biomedical informatics) is informatics in health care.

It is a multidisciplinary field that uses health information technology (HIT) to improve health care via any combination of higher quality, higher efficiency (spurring lower cost and thus greater availability), and new opportunities.

The disciplines involved include information science, computer science, social science, behavioral science, management science, and others.

The NLM defines health informatics as "the interdisciplinary study of the design, development, adoption and application of IT-based innovations in healthcare services delivery, management and planning." It deals with the resources, devices, and methods required to optimize the acquisition, storage, retrieval, and use of information in health and biomedicine.

Health informatics tools include amongst others computers, clinical guidelines, formal medical terminologies, and information and communication systems.

It is applied to the areas of nursing, clinical medicine, dentistry, pharmacy, public health, occupational therapy, physical therapy, biomedical research, and alternative medicine.

All of which are designed to improve the overall of effectiveness of patient care delivery by ensuring that the data generated is of a high quality e.g. an mHealth based early warning scorecard.

Health information management (HIM) is information management applied to health and health care.

It is the practice of acquiring, analyzing and protecting digital and traditional medical information vital to providing quality patient care.

With the widespread computerization of health records, traditional (paper-based) records are being replaced with electronic health records (EHRs).

The tools of health informatics and health information technology are continually improving to bring greater efficiency to information management in the health care sector.

Both hospital information systems and health human resources information systems (HRHIS) are common implementations of HIM.

Professional certification, trade certification, or professional designation, often called simply certification or qualification, is a designation earned by a person to assure qualification to perform a job or task.

Not all certifications that use post-nominal letters are an acknowledgement of educational achievement, or an agency appointed to safeguard the public interest.

The public sector is the part of the economy concerned with providing various governmental services.

The composition of the public sector varies by country, but in most countries the public sector includes such services as the military, police, infrastructure (public roads, bridges, tunnels, water supply, sewers, electrical grids, telecommunications, etc), public transit, public education, along with health care and those working for the government itself, such as elected officials.

The public sector might provide services that a non-payer cannot be excluded from (such as street lighting), services which benefit all of society rather than just the individual who uses the service.