Medicare DMEPOS Market Pricing Program Act of 2013

Medicare DMEPOS Market Pricing Program Act of 2013 - Amends part B (Supplementary Medical Insurance) of title XVIII (Medicare) of the Social Security Act (SSA) to establish a market pricing program for durable medical equipment (DME), prosthetics, orthotics, and supplies (DMEPOS) as a replacement for the competitive acquisition program, which is terminated as of December 31, 2013. Terminates contracts awarded before enactment of this Act on July 1, 2013.

Prescribes requirements for transitional payments for items and services, including payments for diabetic supplies and off-the-shelf orthotics, in areas designated for rounds 1 and 2 of the erstwhile phase-in of the competitive acquistion program, as well as during the initial two-year period of the market pricing program.

Directs the Secretary to: (1) conduct market-priced auctions in eligible auction areas throughout the United States for the furnishing of market priced items and services, (2) establish an auction design through a specified process and meeting certain requirements, and (3) ensure that the first auction will be conducted for all eligible auction areas not later than 14 months after contracting with an auction expert.

Directs the Secretary to: (1) select a combination of two categories of items and services for each auction, (2) establish a lead product for each product category, (3) establish for each market priced item and service a clearing price equal to the highest cost bid that will meet capacity targets in the market area, (4) award a contract to any entity in an auction's eligible market area whose bid is at or below the clearing price, and (5) monitor the performance of suppliers that are awarded a contract to ensure their compliance with certain requirements.

Requires the Secretary, through the Office of the Assistant Secretary for Planning and Evaluation, to contract with an auction expert and a market monitor to assist in the design, development, implementation, and functioning of the auction. Requires the market monitor, on an ongoing basis, also to monitor suppliers and the effects of the market pricing program.

Rescinds unobligated balances of all discretionary appropriations for each fiscal year (except those for accounts, programs, projects and activities operated by the Department of Defense [DOD] or the Department of Veterans Affairs [VA]) in an amount necessary to make this Act budget neutral for such fiscal year.