pick up the tab♯２

まぶたの垂れは女性の敵ですよね。

Eye Lifts — Fine Line Between Cosmetic and Therapeutic

Drooping eyelids may seem like an inevitable effect of getting older, but sagging eyelids not only age a person’s face, they can impair peripheral vision too.

Removing the excess skin through surgery can both improve vision and result in a more youthful appearance, but determining whether the procedure is cosmetic or medically necessary has become a point of controversy, especially since Medicare is increasingly picking up the tab.
http://abcnews.go.com/blogs/health/2013/05/31/eye-lifts-fine-line-between-cosmetic-and-therapeutic/

pick up the tabは以前に先輩が取り上げています。http://d.hatena.ne.jp/A30/20110326/1301145280

復習になりますが、tabは"an amount of money that you owe, or a record of an amount of money that you owe"(LDOCE)という意味があり、pick up the tabで"to pay for something, especially when it is not your responsibility to pay"となります。(ibid)　特に自分に支払う義務が無いときに使う言葉のようです。(Hatahata)