Is there any case law supporting a claim under Section 1983 of the Eighth Amendment for deliberate indifference?

But mere claims of "indifference," "negligence," or "medical malpractice" do not support a claim under 1983. Broughton v. Cutter Laboratories, 622 F.2d 458, 460 (9th Cir. 1980). Inadequate treatment due to malpractice or even gross negligence does not constitute an Eighth Amendment violation. Wood v. Housewright, 900 F.2d 1332, 1334 (9th Cir. 1990). Medical malpractice does not become a constitutional violation merely because the victim is a prisoner. Moreover, differences in judgment between an inmate and prison medical personnel regarding an appropriate medical diagnosis or treatment are not enough to establish a deliberate-indifference claim. Jackson v. McIntosh, 90 F.3d 330, 332 (9th Cir. 1996).