What is a Letter of Medical Necessity (LMN)?Updated 5 days ago

A Letter of Medical Necessity (LMN) is documentation from a licensed provider confirming that a product helps treat or manage a specific medical condition. The IRS requires one to use HSA/FSA funds on certain "dual-purpose" items. With Flex, you don't have to track one down: we facilitate a chat-based telehealth consultation at checkout that is reviewed by a licensed clinician. If approved, Flex will provide your Letter of Medical Necessity for your records.