我google 了一下， 离婚以后医保是不能再cover 前伴侣的。 解释见内， 不是你的前夫要取消你的保险，

是保险公司不让他cover 前伴侣

Generally, no, a medical insurance plan will not cover an ex-spouse after a divorce is finalized, as they are no longer considered a family member. However, there are options for former spouses to maintain coverage, including COBRA, Spouse Equity, or individual policies. 

http://can medical insurance cover ex spouse