The refill total on your phone can jump for reasons that have nothing to do with the medicine itself. A plan year resets, a deductible starts over, a pharmacy drops out of the network, or a generic replaces a brand. From 500 miles away you cannot see the counter, but you can usually see the receipt, and the receipt will show you which of these happened.

Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.

What moves the total

Start with the plan, because most of the changes begin there. Many plans reset their coverage at the start of a new plan year. The plan's drug list can also move a medicine to a different tier, which changes how much she pays for it. The deductible is the amount she pays before the plan starts sharing costs, and early in a plan year she may reach it on the first fills, so the first refill of the year can look much higher than the ones after it. Ask whether the plan has changed its list since the last fill, and whether this medicine is still on it.

Next, look at the pharmacy. The same prescription can cost a different amount at a different pharmacy because of the plan's network agreements. A pharmacy that was in network before may not be now. Ask whether the plan allows mail-order, and whether a longer days' supply is allowed, since some plans price those differently. Delivery fees, rush fills, and supplies can appear as separate lines that are easy to miss on a quick look.

Finally, check the prescription itself. A new prescription from a different doctor, a new strength, or a different form of the same medicine can change the total even when the name sounds the same.

What to check on the receipt

Put the last three receipts side by side and match each line by drug name, not by the total. Circle the lines that moved. For each one, ask four questions. Is this the same medicine and strength as before? Did the pharmacy, the plan, or the prescription change? Where is the deductible for the year? Is this a fee that comes with the fill, such as delivery? The answers usually tell you whether the increase came from a plan decision, a pharmacy decision, or a prescription decision, and each one has a different person to call.

Who answers what

The pharmacist can explain what the pharmacy charged and why, and can tell you whether the same fill was priced differently at another pharmacy in the same network. The plan can explain its tiers, its deductible, and its mail-order rules. The prescriber is the only one who decides whether a different medicine or form is right for her, so ask that as a question and leave the answer with them. A helper can pick up the bag as an errand, but the medicine itself stays with your family, her doctor, and her pharmacist.

What to do tonight

Pull the last three pharmacy receipts and the most recent plan notice, then write a short list of every line that changed. Keep it in plain words, such as the same medicine, higher total, new pharmacy. Call the pharmacy during its quiet hours and ask the pharmacist the four receipt questions above. Then call the number on the back of her plan card and ask the same questions about tiers and the deductible. Write down the name of each person you spoke with and the time of each call, and keep those notes with the receipts.

What to bring to the prescriber

Bring the list of changed lines, the plan notice, and one question: is there a lower-cost option for the same purpose that the prescriber would consider, or is the current medicine still the right one for her? Do not change a dose or stop a medicine because of cost without the prescriber's direction. Let them make the call, and write down what they say.

If you need someone in St. Louis to make the pharmacy run and report back what changed, Local Help for a St. Louis Parent is a good place to start.