29 CFR Part 1630, Regulations to Implement the Equal Employment Provisions of the ADA (Title I Regulations with amendments issued through May 2016)

(4) A covered entity is required, absent undue hardship, to provide a reasonable accommodation to an otherwise qualified individual who meets the definition of disability under the “actual disability” prong (paragraph (g)(1)(i) of this section), or “record of” prong (paragraph (g)(1)(ii) of this section), but is not required to provide a reasonable accommodation to an individual who meets the definition of disability solely under the “regarded as” prong (paragraph (g)(1)(iii) of this section).