---
kind: "section"
citation: "20 C.F.R. § 220.28"
title: "20"
number: "220.28"
heading: "How long the impairment must last."
url: "https://uscodex.org/cfr/20/220.28"
---

# §220.28. How long the impairment must last.


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.


## Notes

### Authority

Authority: 45 U.S.C. 231a; 45 U.S.C. 231f.

### Source

Source: 56 FR 12980, Mar. 28, 1991, unless otherwise noted.