Number of procedures required by ISO 13485:2016

The number of procedures depends on the type of your medical device. Requirements in the standard are prepared for all types of medical devices, so not all requirements are applicable for each medical device. 

On the following link, you can find the list of mandatory documents from ISO 13485 https://advisera.com/13485academy/blog/2017/01/18/list-of-mandatory-documents-required-by-iso-134852016/

Of course, if you do not have certain processes (for example sterilization, or your product is not software), then there is no need to prepare and have those documents in your quality management system.

Furthermore, I would like to point out that these are mandatory documents and definitely some additional documents can be necessary (for example: some policies, organizational charts, some plans and so on).