Is Invisalign Covered by FSA?

Because Invisalign is Orthodontic Treatment it is usually covered by your FSA. The best person to ask is your HR team and confirm that they don't have any stipulations in this regard. 

Orthodontic treatment isnt always just cosmetic. To straighten the teeth improves oral health and bite correction stabilizes a malocclusion.

Invisalign is orthodontic appliance,  so since orthodontic treatment is allowed as an FSA expense, Invisalign is "covered".   Different companies have different rules concerning amounts set aside and the timing of how funds are used for orthodontics.  Contact the human resourced department where you work to get the details of how your FSA works.

FSA accounts normally cover anything medically related that is not cosmetic.  Most adults undergo invisalign either for malocclusion or crowding.  When teeth are crowded they are harder to clean and can lead to gum disease.   This is something that is not cosmetic and should be covered by an FSA account.

FSA typically covers anything medically necessary and not cosmetic or elective.  Generally, you may be getting invisalign because you have cosmetic concerns.  However, if your teeth are not straight, then you have a malocclusion, which is medically justified to treat with orthodontics (Invisalign is Orthodontics).  A vast majority of the population has some sort of malocclusion - they just live with it.  In short, yes FSAs do cover invisalign because you are treating a medical condition of malocclusion.