Support Centre Patient Questionnaires Carer PQ Coding Carer PQ Coding Just one question is asked and coded based on the patient’s response. Are you a carer? YES SNOMED: 224484003 EMIS Read code V2: 918G S1 Read Code V3: Ua0VL NO SNOMED: 506401000000109 EMIS Read code V2: 918r S1 Read Code V3: XaQVL