The main reason why coke nose washer can't be insured is the items beyond the scope of medical insurance fund payment and medical insurance policy restrictions.

Coke nasal cleaner is usually classified as health care equipment or personal care products, not medical equipment. According to the medical insurance policy, such products are usually not covered by the medical insurance fund. The medical insurance fund is mainly used to pay medical expenses, such as diagnosis, treatment, surgery and medicines, but does not include health care products or personal care products. Medical insurance policies will also impose restrictions on specific diseases or treatments. If Coke nasal cleaner is considered as a treatment for a specific disease, but the disease or treatment is not covered by the medical insurance policy, then using the medical insurance card to purchase the product may be restricted.