Why was Dupixent denied when my dermatologist says I need it?

Because the plan's reviewer applied written coverage criteria to the paperwork submitted, and concluded it did not establish what the criteria ask for. Policies in this class commonly require a documented diagnosis, a recorded measure of severity or affected body surface area, and a record of what topical or systemic therapy was tried first. A prescription without those notes attached is denied on the record rather than on the medicine.

What is a body surface area or severity score, and why does it matter?

They are the standardised ways a clinician records how extensive and how severe a skin condition is. Coverage policies for dermatology biologics frequently reference them, so a chart that describes severity only in words can fail a criterion the patient plainly meets. Asking your clinician to record the measure the policy names is often the single most useful step.

Does it matter that the condition affects my face, hands or sleep?

It can. Many policies recognise involvement of areas that are functionally or socially critical, or documented effects on sleep and daily function, as grounds even where the total surface area is modest. The point has to be in the record to count.

The plan says to try topicals first. I have tried them for years.

Then the appeal is documentary. What is needed is the list of agents tried, with strengths, durations and outcomes, and any reason a further topical trial would be inappropriate. Trials that predate your current plan usually still count if they can be evidenced.

How long does an appeal take?

Standard internal appeals and expedited review run on different clocks, and the windows that apply depend on your plan and coverage type. Your denial notice states the deadlines for your case, and expedited review exists where waiting would jeopardise your health.

Dupixent and skin biologics denied: eczema, psoriasis and asthma

Cove Health·August 31, 2026

Biologics for atopic dermatitis, psoriasis and severe asthma are usually denied for a documentary reason rather than a clinical one: the plan's criteria ask for severity, prior therapy and diagnosis to be recorded in a specific way, and the submitted paperwork did not record them that way. That is a gap an appeal can close, because the criteria are published and the evidence is in your chart.

Why was my dermatology or respiratory biologic denied?

Severity was not documented the way the policy asks. Coverage policies in this class typically reference an objective measure: affected body surface area, a validated severity index, or for asthma a documented exacerbation history and lung-function measurements. A note saying the condition is severe, without the measure, can fail a criterion the patient clearly meets.

Prior therapy is missing from the record. Most policies require documented use of topical or conventional systemic therapy first, at an adequate strength and duration. Years of treatment that never made it into a submitted note do not count towards a step the reviewer can see.

The indication or the age band does not match the policy. These drugs carry several approved indications and each has its own criteria. A request evaluated against the wrong indication is denied for a reason that does not describe the case.

Required screening or baseline results were not attached. Where labeling calls for screening before starting, the absence of those results in the submission is a common and entirely fixable cause of denial.

What does the denial letter actually mean?

"Not medically necessary" here means the plan's reviewer concluded the written criteria were not met by the records in front of them. It is not a finding that the treatment is useless or unsafe, and it is not your treating clinician's judgment. It is the plan's, made from partial paperwork, which is exactly the kind of decision the medical necessity appeal route exists for.

If the notice says "step therapy" or names a drug you must try first, the route is a step therapy override. If it says the product is non-preferred or off the formulary, it is a formulary exception. The notice must state the reason and the appeal deadline.

What can I do in the next 48 hours?

Start with the general steps in the first 48 hours after a denial, then do the three things specific to this class.

Ask the plan in writing for the coverage policy it applied, naming the drug and the indication. Ask your clinician's office for notes that record severity in the terms the policy uses, including photographs where they exist, and for the history of topical and systemic agents tried, with strengths, durations and outcomes. Where the condition affects sleep, work, school or a functionally critical area, ask that it be recorded, because policies frequently recognise it and charts frequently omit it.

Not sure which route your letter points to? The free denial check answers that in about a minute, without an account.

How does a physician-written appeal help for these biologics?

The work is translating a chart into the plan's vocabulary, with citations. A licensed physician reviews the records, decides whether the case has merit, and where it does writes a letter that walks the plan's own criteria point by point: the diagnosis and its basis, severity in the measure the policy names, the full history of prior therapy with dates and outcomes, functional impact where the record supports it, and the specialty-society guidelines and labeling that support the prescribed drug for this indication. Each authority is cited, so nothing rests on assertion.

Cove Health cannot guarantee results, but you should not have to make that case alone.

Cove Health provides advocacy services. Information on this site is general information, not legal or medical advice. Cove Health is not a law firm and does not provide legal representation, and submission of records does not guarantee a particular outcome.