There are officially recognised bodies that develop standards, called standards development organisations (SDOs). SDOs usually work across multiple countries, for example at a European or global level. They are almost always not-for-profit organisations who seek to be independent of any vested interest in the manufacture or the purchase and use of health ICT products.
ISO develops most standards in all kinds of domains.
Standards are also developed by other groups such as trade unions or associations, but also making sure that their activities are non-profit and free from the best interests of anyone company.