Accessing Medicare Therapies Act of 2013

Accessing Medicare Therapies Act of 2013 - Amends part D (Voluntary Prescription Drug Benefit Program) of title XVIII (Medicare) of the Social Security Act, with respect to cost-sharing under a prescription drug plan, to require incurred costs to include the negotiated price of a covered part D drug if the drug is: (1) classified in the highest copayment tier; (2) furnished to the individual free or at nominal charge under a compassionate treatment program; and (3) covered under the formulary of the plan, if the drug is furnished other than through such a program, or is available through exception or appeal.