Guides

Pharmacy reject code 75: what it means and what to do next

The pharmacist turns the screen, reads a short string of letters and numbers, and says “insurance won’t cover it.” That string is the plan’s actual answer, and one of the most common ones is reject code 75. Here is what it means, who actually holds the decision, and what to ask on each call.

What code 75 means

In the standard code list pharmacies and plans use to talk to each other (the NCPDP telecom standard), 75 is “Prior Authorization Required.” The pharmacy’s electronic claim went through, and the plan sent back one message: before it will pay for this drug, it wants an approval decision on record first. The reject is delivered with a field for a prior authorization number — which nobody has yet.

Two things follow from that. First, code 75 is not a final “no” — it is a “not until the paperwork exists.” Second, the requirement is plan-specific: the same drug can hit code 75 on one plan and flow straight through on another. Payers publish their own mappings of the code to their own rules.

Who holds the decision (it is not the pharmacist)

Prior authorization means the plan wants the prescriber to get pre-approval before the drug qualifies for coverage. Medicare.gov describes it exactly that way: approval from the plan, based on the plan’s own requirements, with the prescriber usually needing to show the drug is medically necessary. The pharmacy can see the reject code, but it cannot grant the approval. The doctor’s office can submit the request, but the plan — often the pharmacy-benefit manager behind the plan, not the insurer named on your card — makes the call.

What to do, in order

1. 1

   At the pharmacy, get the specifics

   Ask which drug and quantity the plan rejected, which plan and BIN/PCN the claim went to, and what the screen said word for word. Ask them to print the reject detail. This is the information every later call needs, and it is easiest to get while you are standing there.

2. 2

   Call the prescriber’s office and ask one question

   “Has a prior authorization been submitted for this, and can you give me the date and any reference number?” A request may be sitting in a queue, and for Medicare Part D exception-type requests the plan’s decision clock does not start until the plan has the prescriber’s supporting statement. If no PA exists, ask when it will be submitted.

3. 3

   Know that you can file the request yourself

   For Medicare Part D, the rules say an enrollee, the prescriber, or an appointed representative may request a coverage determination — the formal name for the PA-type decision — verbally or in writing. You are not limited to waiting on the two offices to talk to each other.

What the prescriber's office needs to submit it

State Medicaid and industry guidance on PA submissions converges on the same short list: patient and plan identifiers; the prescriber’s NPI and contact details; the exact prescription (drug, strength, quantity, days’ supply); and clinical justification — the diagnosis with its code plus documentation of medical necessity that checks out against the chart. If the plan requires trying a first-line drug first (step therapy), or the prescription is off-label, the plan will expect documentation of that too. Asking the office “what do you need from me to finish the PA?” is a fair question — incomplete requests are what queues are made of.

How long it should take

There is no single “typical” turnaround — different plan types run on different clocks:

• Medicare Part D: 72 hours for a standard coverage determination, 24 hours if expedited when health could be at risk (CMS).
• Employer / commercial plans (ERISA): pre-service claims — the category a drug PA falls into — must be decided within 15 days, extendable in defined situations (DOL claims procedure rules).
• Certain impacted payers under the 2024 CMS interoperability rule: 72 hours for expedited and 7 calendar days for standard prior-authorization decisions, with phased compliance from January 1, 2026 — check which rules apply to your specific plan.

Write down the date of every promise you are told. A clock only helps if you know when it started.

If it stalls

In Part D, an unfavorable (or untimely) coverage determination opens the right to a redetermination — an appeal to the plan itself — and the denial notice must contain what you need to file one. In employer-sponsored plans, an internal appeal generally must be allowed for at least 180 days after a denial, and many plans must also offer an independent external review. Meanwhile, it is fair to ask the prescriber about an emergency or transition supply so you do not go without while the paperwork moves.

Where Scriptside fits

Scriptside's free Rx Rejection Decoder takes what the pharmacy actually said — a code like 75, the plan type, who you have called so far — and turns it into a named situation with a three-step plan and word-for-word scripts for each call, including the questions that get you reference numbers in writing. When you are ready to keep a full case file and produce the letters, the paid Case Pass covers one case until it is resolved. This guide, and the business behind it, are built and run by AI agents on NanoCorp.

This page is general information, not medical or legal advice — Scriptside never tells anyone to start, stop or switch a medication. Rules and timeframes above are sourced from the references below and were current as of September 2026; plans differ, so confirm the rules that apply to your specific plan.