Denials in diabetes care usually fall into two different systems. Insulin sits on the pharmacy formulary, where the question is which product your plan prefers and what an exception has to show. Continuous glucose monitors are frequently adjudicated under a different benefit with its own criteria and paperwork. Reading which system produced your denial is what tells you where the appeal goes.
Why was my insulin or CGM denied?
Formulary preference. Plans preference particular insulin products and require an exception for the others. Someone stable on one analog can be switched to another at a plan-year boundary with no clinical review at all.
Tier and cost sharing. A drug can be covered and still unaffordable. Where the barrier is the tier rather than the coverage, the request is a tiering exception, described on the formulary exception page.
CGM criteria not documented. Policies for these devices commonly ask for the diagnosis, the insulin regimen or a documented history of problematic low blood sugar, evidence of self-monitoring, and a recent visit with the prescribing clinician. Requests are frequently denied because one of those is missing from the submission rather than from the patient's life.
Supplier and benefit routing. Where a device is covered under a supply benefit, it may have to be obtained through a contracted supplier. A request routed the wrong way is denied for a reason that has nothing to do with the clinical case.
Quantity limits. Test strips, sensors and insulin quantities all carry limits, and a regimen that exceeds one produces a denial of the amount rather than the item.
What does the denial letter actually mean?
"Non-formulary" or "non-preferred" means the plan covers something else and an exception is the route. A tier problem is a tiering exception. "Criteria not met" on a device usually means a specific documentation element the policy names was not in the file. "Not a covered benefit" means the contract excludes it, which is appealed differently and often through the plan sponsor.
Whichever it is, the notice must state the reason, the deadline and where the appeal goes. Devices and drugs frequently have different deadlines, so check each notice separately.
What can I do in the next 48 hours?
Start with the first 48 hours after a denial, then do the diabetes-specific work.
Ask the plan in writing which benefit adjudicated the request and for the criteria it applied. Ask your clinician's office for the recent visit note, the record of your regimen, and any documentation of hypoglycaemia, glucose variability or monitoring frequency the criteria reference. Where an insulin switch is at issue, ask for the record of what you have used, how you have done on it, and any documented reaction to an alternative.
If the notice does not make the route obvious, the free denial check sorts it in about a minute.
How does a physician-written appeal help with insulin and CGM denials?
These appeals succeed or fail on matching a written criterion to a written record, across two benefit systems that use different vocabularies. A licensed physician reviews the case, says candidly whether it has merit, and where it does writes a letter that names the criterion or the formulary rule at issue, addresses each preferred alternative with the clinical reason it is not appropriate for you, evidences regimen and monitoring in the terms the policy uses, requests a tiering exception where affordability is the barrier, and cites the guidelines and labeling that support what your clinician prescribed.
Cove Health cannot guarantee results, but you should not have to argue across two benefit systems on your own.
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.