Medicare Part D New Update - Medicare Part D insulin coverage changes The cost of a one-month supply of each Part D-covered insulin is capped at $35, and you don’t have to pay a deductible For insulin. This applies to everyone who takes insulin, even someone who gets Extra Help. If someone gets a 60- or 90-day supply of insulin, costs can't be more than $35 for each month's supply of each covered insulin. For example, if someone gets a 60-day supply of Part D-covered insulin, you'll generally pay no more than $70. Other questions about insulin coverage? Plans have until the end of March 2023 to update their systems to reflect the $35 cap on insulin, which means you might be charged a higher amount during this time when you fill a prescription for insulin. If you pay more than $35 for a month’s supply of a covered insulin product in January and/or February 2023, your plan must reimburse you within 30 calendar days for any amount you paid above the $35 cap. Conta...