What is one eligibility requirement for Original Medicare?

One eligibility requirement for Original Medicare is being under 65 years of age with certain disabilities for more than 24 months. This provision is part of the Social Security Administration's regulations, allowing individuals who qualify due to a disability to access Medicare coverage earlier than the traditional age threshold of 65.

Individuals who have received Social Security Disability Insurance (SSDI) for 24 months automatically become eligible for Medicare, regardless of their age. This option is critical as it extends health care coverage to younger individuals who may not otherwise qualify based solely on age.

The other potential options in the question do not align with the primary eligibility criteria for Original Medicare. For instance, while age 70 and older represents an age group often covered by Medicare, simply reaching that age without the requisite other qualifications does not guarantee coverage. Similarly, having a low income is relevant for some Medicare programs, such as Medicare Savings Programs or Medicaid, but it does not directly qualify someone for Original Medicare itself. Thus, the specific requirement concerning individuals under age 65 with disabilities is the correct criteria representing eligibility for Original Medicare.