Wikipedia
ASHICE is one of several mnemonic acronyms used by emergency medical services in the United Kingdom and the Republic of Ireland to pass summarised advance details of a patient to the next group of persons or organisation dealing with them (others include ATMIST and CASMEET). In the English and Welsh NHSs the procedure is not used for non-critical patients on their eventual journey to hospital but is used as standard procedure for handovers of patients before transport to hospital where a site or event is staffed by trained personnel of both paid or voluntary ambulance services. This procedure is in addition to written records of the patient's personal and medical details and any treatment or medication applied prior to transport to hospital.
The word is treated as a noun by personnel (whether first aiders, community first responders or paramedics) who might refer to e.g. 'passing an ASHICE'. The purpose of an ASHICE message is to enable persons involved in the next stage of treatment to make an advance determination of the appropriate personnel and facilities to deal with a patient and the degree of urgency to be applied.