Medicare Cancer Coverage Improvement Act of 1991

Medicare Cancer Coverage Improvement Act of 1991 - Amends title XVIII (Medicare) of the Social Security Act to cover: (1) any use of a drug in an anticancer chemotherapeutic regimen if such use has been approved by the Food and Drug Administration, published in peer-review medical literature, or included in one or more of three specified medical compendia; and (2) an oral form of a drug prescribed for such a use in an anticancer chemotherapeutic regimen if the drug contains the same active ingredients as a drug that would be covered if administered as incident to a physician's service. Requires a study and report to specified congressional committees on Medicare coverage of patient care costs associated with clinical trials of new cancer therapies.