How are M sub-categories differentiated?
The subcategories of M are based on decisions about location of care. An M1 designated person – often someone in chronic Home Care or in Supported Living such as Long Term Care – might seek and would be appropriate for interventions in a more acute setting, but not including resuscitation and ICU interventions.. However, an M2 designated person residing at home or in LTC would not be transferred to acute care, should their condition deteriorate. They would be treated with the interventions that are available in their current setting with the goals of control of underlying illnesses, cure of intercurrent illness and symptom relief. Hospitalized patient with M1 designation: An M1 patient currently in hospital is someone who would not be appropriate for resuscitative measures followed by ICU should they have a cardiorespiratory arrest. They would still be offered other interventions that are appropriate to cure or control their underlying illness and to treat intercurrent illnesses. M1 He