A Letter of Medical Necessity (LMN) is a document written by a licensed physician that explains why a specific product or service is medically necessary for a patient. For FSA (Flexible Spending Account) and HSA (Health Savings Account) reimbursement of fall detection devices like Omveo, an LMN may be required by the plan administrator. This page explains what an LMN is, what it needs to contain, and how to ask your parent's physician for one.
What Is a Letter of Medical Necessity?
An LMN is a formal statement from a physician that a specific item or service is medically necessary for a named patient. FSA and HSA administrators require LMNs for products that are not inherently medical (like prescription medications) but that have a legitimate medical purpose for a specific patient. Fall detection wearables like Omveo fall into this category — they are not FDA-cleared medical devices, but a physician can legitimately state that a specific patient's fall risk, medical history, or condition makes fall detection medically appropriate for them.
The LMN does not guarantee reimbursement — it is submitted to the plan administrator, who makes the eligibility determination. Most plans accept LMNs for fall monitoring devices when the physician's documentation is clear and specific.
What an LMN for Omveo Should Include
A complete LMN for fall detection device reimbursement typically includes:
- Patient name, date of birth, and insurance information
- Physician name, credentials, practice address, and signature
- Date of the letter (must be dated within the current benefit year or the year of purchase)
- Specific diagnosis or condition that creates fall risk (e.g., "orthostatic hypotension," "history of syncope," "frailty syndrome," "post-bariatric surgery recovery")
- Description of the specific device: "Omveo BT1 fall detection smartwatch" with the approximate cost ($119)
- Statement of medical necessity: why this specific device is medically appropriate for this patient — e.g., "Patient has a documented history of falls related to orthostatic hypotension and requires automatic fall detection that does not depend on the patient pressing a button."
- Duration of medical necessity: "ongoing" or for a specific recovery period
Sample Language for the Physician
You can provide this sample language to your parent's physician to assist in drafting the LMN. The physician will modify it to reflect the patient's actual clinical situation:
To Whom It May Concern:
I am writing to confirm that [Patient Name], Date of Birth [DOB], is under my care for [diagnosis, e.g., orthostatic hypotension / history of falls / frailty syndrome]. Due to this condition, [Patient Name] is at elevated risk for falls that may result in serious injury.
I recommend the use of the Omveo BT1 fall detection smartwatch (approximate cost: $119) as a medically appropriate safety device for this patient. This device provides automatic fall detection — including hard-fall impact detection and a 30-second motionless trigger — that does not require the patient to manually press a button. This automatic detection feature is specifically necessary for this patient due to [reason: e.g., documented syncope episodes where the patient loses consciousness at time of fall / cognitive impairment that prevents self-reporting / physical limitations that prevent button-press access].
This device is medically necessary to protect this patient's health and safety, and I support its purchase as a medical necessity under the patient's FSA/HSA benefit plan.
Sincerely,
[Physician Name, MD/DO/NP]
[Practice Name and Address]
[Physician Signature]
[Date]
How to Request the LMN
Most physicians are familiar with LMNs and can produce one during a routine appointment or by a patient portal request. To make it as easy as possible:
- Bring the sample language above to the appointment or send it through the patient portal message system.
- Specify the exact device name: "Omveo BT1 fall detection smartwatch, $119."
- Ask the physician to reference the specific diagnosis that creates fall risk — the more specific the clinical rationale, the more likely plan administrator approval.
- Submit the LMN to your FSA/HSA plan administrator along with the Omveo purchase receipt.
FSA vs HSA: Key Difference
FSA funds expire at the end of the benefit year (some plans have a grace period or $610 rollover as of 2026). HSA funds roll over indefinitely. Both can be used for Omveo with an approved LMN. If purchasing Omveo near the end of the FSA benefit year, confirm whether the purchase date or the LMN date is the controlling date for your plan.
What Omveo Is and Is Not
Omveo is not FDA-cleared and is not a medical device. An LMN does not change this designation — it establishes that the device has a legitimate medical purpose for a specific patient. FSA/HSA eligibility based on an LMN is separate from FDA clearance status. Contact your plan administrator with specific eligibility questions before purchase.
Frequently Asked Questions
Does every FSA/HSA plan require an LMN for fall detection devices?
Plan requirements vary. Some plans will reimburse fall detection devices without an LMN; others require one. Check with your plan administrator before assuming either direction.
Can a nurse practitioner or PA write the LMN, or does it need to be an MD?
Most FSA/HSA plans accept LMNs from any licensed prescriber — including nurse practitioners and physician assistants. Check your specific plan's requirements.
How long does the LMN remain valid?
Most FSA/HSA plans accept LMNs for 12 months from the date of issue. Some plans require a new LMN each benefit year. Confirm the validity period with your plan administrator.
Can I submit an LMN for a device I already purchased?
Most FSA/HSA plans allow retroactive reimbursement within the same benefit year, provided the LMN is dated within the benefit year and the purchase receipt is submitted. Check your plan's retroactive submission policy.
What if my FSA/HSA administrator rejects the LMN?
Ask for the specific reason for denial and whether an appeal process is available. LMN denials are often based on insufficient clinical specificity — a more detailed LMN from the physician may resolve the denial.
Omveo may qualify for FSA or HSA reimbursement with a Letter of Medical Necessity from your physician. Use the sample language above to make the LMN request as efficient as possible for your parent's doctor. Try it free for 45 days — only pay if you love it.
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