The vast majority of designated chronic disease hospitals in coordinated areas support changes. Only some areas have certain restrictions on the time and frequency of changes. Don't worry too much about being bound and unable to change.
A while ago, I helped Aunt Zhang, who lives in Lixia District, Jinan, to make changes. When she applied for high blood pressure diagnosis, she chose the community health service center downstairs. In the second half of last year, she moved with her son to the high-tech zone to take care of her grandson. The original designated hospital was 20 kilometers away from her new home, making it particularly inconvenient to get medicine. I taught her to find the entrance to the targeted adjustment for chronic special diseases on the "Jinan Medical Insurance" mini-program, and she chose a community hospital near her new home to submit the application. It took effect the next day. Later, when she went to get amlodipine, she could go straight to the door and be reimbursed, and the out-of-pocket fee was only a few yuan.
Of course, not all places can adjust at any time. Last year, a netizen from Yuncheng, Shanxi came to me for consultation and said that he had just opened a diabetes clinic for three months because he had to change designated hospitals because of a job transfer. When I went to the medical insurance window to ask, I learned that the local regulations stipulate that the designated hospitals for chronic special diseases can only be changed in December each year. Scattered applications are not usually accepted, and adjustments can only be made at the end of the year. This is actually a policy difference between different coordinating areas, and there are no unified hard requirements.
Nowadays, the change process in most places is quite simple. You can use your smartphone to directly search the local medical insurance public account and the "Chronic Special Diseases Fixed-point Change" port in the mini program, select the hospital you want to change and submit it. The fastest one will take effect on the same day, and the slow one will only take about 3 working days. If you are too old and don't know how to operate it, go to the nearby medical insurance handling hall or community medical insurance service point with your ID card and chronic disease identification book. The staff can help you get it done in a few minutes.
If you are a designated hospital for special chronic diseases such as malignant tumors, radiotherapy, chemotherapy, and renal dialysis, when there are changes in some places, you may need to issue a transfer certificate from the original designated hospital. This is not to deliberately block you, but mainly because you are afraid that your previous medical treatment and medication records will be out of date, and the new hospital will not be able to quickly connect your treatment plan, which will delay things. If you are really unsure about the local rules, just call the 12393 national medical insurance service hotline and ask a few questions to avoid unnecessary mistakes.

Bellamy 