Medicare does not cover Ensure or similar oral nutritional supplements in most situations. Because Ensure is designed to be drunk by mouth, it falls outside the scope of what Medicare considers medically necessary nutrition support. The distinction comes down to how the nutrition enters your body: Medicare will pay for liquid nutrition delivered through a feeding tube, but not for the same or similar products you drink.
Why Medicare Doesn’t Cover Oral Supplements
Medicare Part B covers nutritional formulas under its prosthetic device benefit, but only when the formula is administered through a feeding tube directly into the stomach or intestines. CMS policy is explicit: “Orally administered enteral nutrition products, related supplies and equipment will be denied non-covered, no benefit.” Products consumed by mouth are coded differently in the billing system and automatically rejected.
The logic behind this rule is that Medicare treats tube-delivered nutrition as a medical device replacing a body function that no longer works. Drinking a supplement, even if a doctor recommends it, is considered a food purchase rather than a medical intervention. This applies to Ensure, Boost, Glucerna, and every other brand of oral nutritional shake.
When Medicare Does Cover Nutritional Formulas
If you receive nutrition through a nasogastric tube, gastrostomy tube (G-tube), or jejunostomy tube (J-tube), Medicare Part B covers the formula, the feeding pump, and related supplies. To qualify, you need a documented permanent or long-term condition that prevents food from reaching or being absorbed by your small intestine through normal eating.
Qualifying conditions fall into two broad categories. The first involves structural problems that prevent food from reaching the small bowel normally: head and neck cancers requiring reconstructive surgery, or neurological diseases severe enough that the swallowing mechanism no longer functions safely. The second involves diseases that impair digestion or absorption even when food does reach the gut: inflammatory bowel disease, surgical removal of part of the small intestine, cystic fibrosis, chronic pancreatitis, and advanced liver disease.
Your doctor must document that the condition is expected to last at least 90 days, and the formula must be ordered by a physician. After you meet the Part B annual deductible ($240 in 2024), you typically pay 20% of the Medicare-approved amount for these supplies.
Part D Drug Plans Don’t Cover It Either
Some people wonder whether their Medicare Part D prescription drug plan might cover Ensure if a doctor writes a prescription for it. It won’t. Part D is limited to FDA-approved drugs, and nutritional supplements like Ensure are classified as food products, not drugs. Part D also excludes over-the-counter products (with narrow exceptions like insulin) and most vitamins and mineral supplements. Even if your doctor writes “Ensure” on a prescription pad, your Part D plan has no legal basis to cover it.
Medicare Advantage Plans May Offer Help
Medicare Advantage (Part C) plans have more flexibility than Original Medicare. Many of these private plans now offer supplemental benefits related to food and nutrition, particularly for members with chronic conditions, functional limitations, or low incomes. In California, for example, about 20% of all Medicare Advantage plans and 51% of dual-eligible special needs plans offered food and produce benefits in 2023.
These benefits vary widely by plan. Some provide a monthly allowance on a prepaid card you can use to buy nutritional drinks at approved retailers. Others deliver meals or nutritional supplements directly. The key detail is that these are supplemental benefits each plan chooses to offer, not a standard Medicare entitlement. You would need to check your specific plan’s benefits summary or call the plan directly to find out whether Ensure or similar products are included and whether any conditions apply.
Coverage During a Skilled Nursing Stay
There is one situation where Medicare indirectly pays for oral nutritional supplements: when you’re in a skilled nursing facility during a Medicare-covered stay (the first 100 days after a qualifying hospital admission). During that time, Medicare Part A covers your care as a bundled payment to the facility, and the facility is responsible for providing all medically necessary nutrition, including oral supplements like Ensure if your care team prescribes them. You don’t pay separately for the drinks in this scenario. However, CMS has specifically stated that “nutritional supplementation is not covered under Medicare Part B,” so once you leave the facility, the coverage stops.
Options for Paying Out of Pocket
A 30-serving supply of Ensure typically costs $30 to $50 depending on the product line and where you buy it. If you rely on these drinks for daily nutrition and Medicare won’t cover them, a few strategies can reduce costs. Buying in bulk from warehouse clubs or online retailers often brings per-serving costs down significantly. Store-brand equivalents from major pharmacies and grocery chains contain comparable nutrition profiles at lower prices. Some manufacturers offer coupons, subscribe-and-save discounts, or patient assistance programs.
State Medicaid programs (for those who qualify based on income) sometimes cover oral nutritional supplements when Medicare does not. If you’re enrolled in both Medicare and Medicaid, your state program may fill this gap. Programs like the Supplemental Nutrition Assistance Program (SNAP) also allow the purchase of nutritional drinks, since they’re classified as food products.