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20 CFR § 404.701 - Introduction. 

---
identifier: "/us/cfr/t20/s404.701"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 404.701 - Introduction."
title_number: 20
title_name: "Employees' Benefits"
section_number: "404.701"
section_name: "Introduction."
chapter_name: "SOCIAL SECURITY ADMINISTRATION"
part_number: "404"
part_name: "FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950-  )"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
cfr_part: "404"
---

# 404.701 Introduction.

This subpart contains the Social Security Administration's basic rules about what evidence is needed when a person claims old-age, disability, dependents' and survivors' insurance benefits as described in subpart D. In addition, there are special evidence requirements for disability benefits. These are contained in subpart P. Evidence of a person's earnings under social security is described in subpart I. Evidence needed to obtain a social security number card is described in part 422. Evidence requirements for the supplemental security income program are contained in part 416.