20 C.F.R. § 220.28 How long the impairment must last.
Title 20 - Employees' Benefits
Unless the claimant's impairment is expected to result in death, it must have lasted or must be expected to last for a continuous period of at least 12 months. This is known as the duration requirement.
Title 20: Employees' Benefits
PART 220—DETERMINING DISABILITY
Subpart D—Disability Under the Railroad Retirement Act for Any Regular Employment
§ 220.28 How long the impairment must last.
