Get your outpatient chronic-and-special-disease status approved (门诊慢特病认定) first, then register for out-of-area care: high blood pressure, diabetes, chemo and radiotherapy, dialysis and anti-rejection drugs can then be settled directly in another place

In plain words

For high blood pressure, diabetes, outpatient chemo and radiotherapy for malignant tumors, dialysis for uremia, and anti-rejection drugs after an organ transplant, these 5 kinds of care can be paid directly with your medical insurance (医保) even when you see a doctor in another place. You don't have to pay up front and then claim reimbursement where your insurance is registered. But you first have to get the outpatient chronic-and-special-disease status approved where you are insured, and then register for out-of-area care. It only works once both are done.