Is there any case law that supports the presumption that a person with schizophrenia is disabled under the Mental Health Act?

Esselstrom challenges the Secretary's determination, at stage three of the review process, see 20 C.F.R. Sec. 404.1520(d), that his impairment does not meet or equal any of the impairments listed in part 404, subpart P, appendix 1. He contends that his schizophrenia meets the severity of No. 12.03(C) in appendix 1. If so, that would create a conclusive, not a rebuttable, presumption that he was disabled under Title II of the Act. See Bowen v. Yuckert, 482 U.S. 137, 141, 146 n. 5, 107 S.Ct. 2287, 2291, 2294 n. 5, 96 L.Ed.2d 119 (1987).