A bill to amend titles II and XVIII of the Social Security Act to provide medicare coverage for disabled individuals under age 65 from the first month of their entitlement to benefits based on disability in cases where the individuals involved are becoming re-entitled to such coverage after a previous coverage period which ended during the preceding 5 years.

Amends Titles II (Old-Age, Survivors, and Disability Insurance) and XVIII (Medicare) of the Social Security Act to authorize Medicare coverage for disabled individuals under age 65 from the first month of their entitlement to benefits based on disability, in cases where the individuals involved become re-entitled to such coverage after a previous coverage period which ended within the previous 60 months.

Amends the Railroad Retirement Act of 1937 to extend the same provisions to individuals previously covered by such Act who are now under Title II of the Social Security Act.