38 U.S.C. § 1730A

1. (a)Notwithstanding subsections (f) and (g) of section 1710 and section 1722A(a) of this title or any other provision of law, the Secretary may not require a covered veteran to make any copayment for the receipt of hospital care or medical services under the laws administered by the Secretary.
2. (b)In this section, the term “covered veteran” means a veteran who—
   1. (1)is catastrophically disabled, as defined by the Secretary; or
   2. (2)is an Indian or urban Indian (as those terms are defined in section 4 of the Indian Health Care Improvement Act (25 U.S.C. 1603)).