** Shares of medical technology co Polynovo PNV.AX rise as much as 26.6% to A$1.665, their highest point since May 14
** Stock is top gainer in ASX 200 benchmark index .AXJO
** Polynovo says outpatient wound care, for which the U.S. has proposed changes in medicare reimbursement policies, is a "significant potential growth area" for its products
** Says it is currently assessing commercial model for accessing the outpatient opportunity
** U.S. Centers for Medicare & Medicaid Services' proposed plan for flat reimbursement for outpatient skin substitutes of $806 per square inch CMS is currently under consultation
** Stock has lost 28.7%, YTD
(Reporting by Himanshi Akhand in Bengaluru)
((Himanshi.Akhand@thomsonreuters.com;))