What to do
Get the plan's definition of experimental
Every plan document defines the term, usually with criteria such as regulatory approval, peer-reviewed literature, and acceptance in the relevant specialty. Read it before writing anything.
Test the procedure against each element of that definition
This is where the denial usually falls apart. The procedures have decades of literature and are described in the recognised standards of care.
Point at Medicare's own history
Medicare removed its blanket experimental exclusion in 2014. A plan calling the same procedure experimental in 2026 is out of step with the federal payer.
Have your surgeon speak to acceptance in the specialty
Case volume, training pathways, and specialty society positions all go to whether the procedure is accepted, which is usually an explicit element of the definition.
Go to external review
Independent reviewers apply the plan's definition to the actual literature, which is exactly the ground this denial is weakest on.
Why this denial is often a misclassification
Experimental denials tend to appear where an insurer has no specific policy for a procedure and reaches for a general exclusion. Ask which clinical policy was applied. If the answer is that none exists for this procedure, that is itself the point: an absent policy is not evidence that care is investigational.
Common questions
- Is gender-affirming surgery experimental?
- Not by the criteria plans themselves use. The procedures have long clinical histories, established literature, and specialty acceptance, and Medicare dropped its blanket experimental exclusion in 2014.
- What if a specific technique is genuinely newer?
- Then separate it out. Appeal the established procedures on their own record rather than letting one newer element characterise the whole surgical plan.
Where to go next
Sources for the legal points on this page
- Medicare has no national coverage determination for gender-affirming surgery
Federal — Medicare · effective ongoing; blanket exclusion removed 2014
CMS decision memo CAG-00446N; NCD 140.3 (removed 2014)
Status: settled · source-checked 2026-08-06 · primary source verified: never