A bill to amend title XVIII of the Social Security Act with respect to effective dates of enrollments and disenrollments of medicare beneficiaries in health maintenance organizations and competitive medical plans.

Amends title XVIII (Medicare) of the Social Security Act with respect to the effective dates of enrollments and disenrollments of Medicare beneficiaries in health maintenance organizations (HMO) and competitive medical plans (CMP).

Provides that when an individual is receiving inpatient hospital services or post-hospital extended care services other than through an HMO or CMP, the HMO or CMP must provide reimbursement for necessary services furnished other than through the HMO or CMP after the date of the individual's HMO or CMP enrollment.

Provides that a disenrollment from an HMO or CMP shall be effective as of the seventh day after the request is made.