IBD Medication Denied: A Step-by-Step Appeal Checklist

A denial letter for a biologic or advanced therapy starts a clock on the date you receive the notice. Appeals are won by assembling the right documents in the right order and filing them before the deadline expires, so the most useful thing you can do first is turn the denial into a tracked project. Delay carries real cost: in a study of pediatric inflammatory bowel disease published in Pediatrics, prior authorization that required appeals, step therapy, or peer-to-peer review added a median 24.6 days to biologic initiation, and in adults, dose escalation requests that required an appeal took a median 29 days to approve, with longer approval times linked to worse C-reactive protein improvement.

Step 1: Identify what type of denial you actually received

Read the denial notice and find three things: the stated reason, the specific plan or policy provision cited, and the date of the notice. Denials generally fall into medical necessity, step therapy or formulary exclusion, or administrative categories such as a missing prior authorization or a coding error. The category determines your strategy, because an administrative denial is often fixed by resubmission while a medical necessity denial requires clinical evidence. If the notice is vague, you have a right to specifics. Federal rules require plans to provide, on request, the diagnosis code and treatment code and their corresponding meanings, which tells you exactly what your plan believes was requested.

Step 2: Confirm which appeal system your plan uses

The appeal path depends on who pays your claims. Commercial and Affordable Care Act marketplace plans follow the federal internal appeal and external review rules and, for marketplace plans, must also run a formulary exception process that decides standard requests within 72 hours and exigent requests within 24 hours. Self-funded employer plans are governed by ERISA and follow the same internal appeal framework, but their external review runs through either an applicable state process or the federal external review process when no state process applies. Medicare has its own multi-level system, and it splits further by whether the drug falls under Part D, a Medicare Advantage plan, or Original Medicare Part B. Check your summary plan description, then write the answer at the top of your appeal file.

Step 3: Calendar every deadline the day you get the letter

Deadlines differ sharply by plan type, and missing one usually ends the appeal. For employer-sponsored and commercial plans, the rules give claimants at least 180 days after receiving an adverse benefit determination to file an internal appeal, with plan decisions due within 72 hours for urgent care claims, 30 days for pre-service claims, and 60 days for post-service claims. Medicare Part D gives you 60 calendar days from receipt of the coverage determination to request a redetermination, and Medicare Advantage sets the same 60-day window for reconsideration. Original Medicare Part B, which covers most infused biologics given in a clinic, allows 120 calendar days to request a redetermination. Medicare presumes you received the notice five days after its date, so count from there, and note that both Part D and Medicare Advantage allow a late filing if you show good cause in writing.

Step 4: Request the documents your plan must give you free of charge

Before you argue, get the file. Plans must provide claimants with reasonable access to and copies of all documents, records, and other information relevant to the claim at no cost. Send one written request that asks for the complete claim file, the specific clinical criteria or coverage policy applied to your request, the credentials of the reviewer who issued the denial, and any internal guideline or protocol relied upon. That last item matters because most medical necessity denials rest on a written coverage policy, and reading it tells you precisely which criterion the plan believes you failed. Federal rules also require plans to give you any new evidence or rationale generated during the appeal, free of charge and early enough for you to respond.

Step 5: Assemble the evidence that answers the stated criterion

Build the packet against the plan's own criteria rather than against the denial in general. The core documents are a prescriber letter of medical necessity, a treatment history showing which therapies were tried and why each was stopped, and objective disease activity data. Objective data carries the most weight, and ACG guidance for Crohn's disease in adults supports assessment using endoscopic findings, C-reactive protein, and fecal calprotectin alongside symptoms. Include the relevant clinic notes, endoscopy and pathology reports, imaging, lab trends, hospitalization or steroid-course records, and drug level or antibody testing if available. For Medicare Part D, the prescriber's role is formal: an exception request requires a supporting statement that formulary alternatives would be less effective or cause adverse effects. Keep a one-page tracker listing each document, its source, the date requested, and the date received.

Step 6: File the internal appeal and ask for expedited review when warranted

Submit in writing, keep proof of delivery, and state plainly that you are requesting an appeal of a specific claim or authorization number. If waiting would seriously jeopardize your health or your ability to regain function, request expedited handling. Urgent claims must be decided within 72 hours under the commercial rules, Part D expedited coverage determinations within 24 hours, and Part D expedited redeterminations within 72 hours, with standard redeterminations due in 7 calendar days. Flares, steroid dependence, or an interrupted maintenance schedule for an established therapy are the circumstances that typically justify expedited review, and NIDDK describes biologics as a core treatment for maintaining remission. If the reviewer offers a peer-to-peer call, take it and send your prescriber the coverage criteria beforehand.

Step 7: Escalate to external review or the next Medicare level

Internal appeal is rarely the end. After a final internal denial, commercial and self-funded plan members generally have four months to request external review by an independent review organization, which must decide within 45 days, or 72 hours if expedited, and whose decision binds the plan. In Part D, an upheld redetermination moves to an independent review entity, and enrollees have 60 calendar days to request that reconsideration, with further levels available before an administrative law judge and the Medicare Appeals Council. Participants in ERISA-governed plans retain a separate statutory right to bring a civil action to recover benefits due under the plan once internal remedies are exhausted. Each escalation reuses the same evidence file, so the work done at step five compounds. Keep the denial letters, submission receipts, and decision dates together, because that record is what the next reviewer reads.