PAS 150 Providing rehabilitation services. Code of practice is the document to help you benchmark your rehabilitation services. If you provide rehabilitation services (in health, social care or the employment sector), then a new guide will help you achieve better quality care for people with any disability or health condition. PAS 150 (Publicly Available Specification) is a landmark new code of practice that BSI, the UK Rehabilitation Council, and Department for Business Innovation and Skills have published. This guide is intended to help healthcare providers reduce risk and defend decisions and actions. PAS 150 aims to stimulate innovation and commitment to excellence. It focuses on the interdependence between work, health and wellbeing.