Unfortunately, the sources provided do not mention any specific discount codes for Yervoy, an immunotherapy medication used to treat certain types of cancer. It is advisable to check with the manufacturer, Bristol-Myers Squibb, for any patient assistance programs, discounts, or coupons that may be available for Yervoy. Additionally, contacting pharmacies directly or utilizing prescription discount cards may also help reduce the cost of the medication. It's important to consult with healthcare providers and pharmacists to explore all available options for obtaining Yervoy at a more affordable price.

Sources:
[1] drugpatentwatch.com
[2] drugs.com
[3] nicerx.com