Nexus letter guide · 5269

Nexus Letter for Plantar Fasciitis: What It Must Say

The medical opinion connecting Plantar Fasciitis (5269) to your service is the piece of the file a rater weighs most heavily. This is what that letter has to contain — and a complete, real example you can read before writing a word.

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Sample — Illustrative Specimen

Invented veteran · fictional sample provider · not a signed medical opinion

INDEPENDENT MEDICAL OPINION

Veteran: Samuel Okonkwo (invented veteran — illustrative sample)
Condition at issue: Obstructive Sleep Apnea (ICD-10 G47.33)
Service-connected condition relied upon: Chronic Sinusitis (ICD-10 J32.9)
Basis of claim: Secondary service connection under 38 C.F.R. §§ 3.303, 3.310
Opinion date: August 4, 2026

REASON FOR EVALUATION

This is an independent medical opinion prepared for the purpose of assisting in the determination of eligibility for veterans benefits. Its single question is a medical one: whether Mr. Okonkwo's obstructive sleep apnea is proximately due to, the result of, or aggravated beyond its natural progression by his service-connected chronic sinusitis. It is addressed to the C&P examiner and the VA rating official who will weigh it.

MEDICAL OPINION

It is my opinion that it is at least as likely as not (a 50 percent or greater probability) that Obstructive Sleep Apnea is proximately due to, the result of, or aggravated beyond its natural progression by the veteran's service-connected Chronic sinusitis (38 C.F.R. §§ 3.303, 3.310). In short: but for the veteran's service-connected Chronic sinusitis, Obstructive Sleep Apnea would not have occurred, or would not have progressed to its current severity.

Based on the history and records reviewed and the medical literature governing this condition, I opine that Obstructive Sleep Apnea (ICD-10 G47.33) is proximately due to, the result of, or aggravated by his service-connected Chronic sinusitis (ICD-10 J32.9), under 38 C.F.R. § 3.310. This claim is brought as secondary to Chronic sinusitis, established as service-connected in the veteran's VA claims file; the opinion below rests on that anchor. The mechanism connecting the two conditions — chronic nasal and sinonasal obstruction increasing upper-airway resistance and collapsibility during sleep — is well established in the peer-reviewed literature and applies directly to a claimant, like Mr. Okonkwo, whose sinonasal disease began in service and whose obstructive sleep apnea was later confirmed on polysomnography. My opinion accounts for the recognized non-service risk factors for this condition, none of which displaces the sinonasal pathway as at least an equal and materially contributing cause.

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The published example letter — an invented veteran and a fictional sample provider.

Key facts

Rated under: 38 CFR § 4.71a, DC 5269 (effective 2021)
Diagnostic code: 5269
The standard: “At least as likely as not” — 50% or greater
Connection theories: Direct (§ 3.303)

The short answer

A plantar fasciitis nexus letter is a medical opinion that your plantar fasciitis is "at least as likely as not" caused by the running, marching, rucking, and hours on hard surfaces your service demanded, or by a service-connected condition such as flat feet or a knee, ankle, or back problem that changed the way you walk. It should name the diagnosis, point to heel pain in your service records or soon after, and address weight, post-service work, and footwear. VA has rated plantar fasciitis under its own code, DC 5269, since 2021.

What a nexus letter is

A nexus letter is a written medical opinion from a licensed clinician stating that a veteran’s condition is “at least as likely as not” (a 50 percent or greater probability) connected to their military service — or to a condition already service-connected. It is the bridge between a diagnosis and service connection: the VA has your diagnosis and your service records, and the nexus opinion is what ties them together with medical reasoning a rater can weigh.

The standard · 38 CFR § 3.102

“At least as likely as not”

The opinion does not have to be certain, or even “more likely than not.” A 50 percent or greater probability meets the standard; when the evidence is in approximate balance, the benefit of the doubt goes to the veteran.

What a Plantar Fasciitis nexus letter must contain

1
The diagnosis, by name and code
Plantar Fasciitis named as a current, documented diagnosis — the condition the VA rates under 38 CFR § 4.71a, DC 5269 (effective 2021) (5269). No diagnosis, no service connection: the opinion has to be about a condition that exists in your records.
2
The theory of connection
For most Plantar Fasciitis claims this is direct service connection under 38 C.F.R. § 3.303 — the letter connects the condition to an in-service event, injury, or exposure, and says so explicitly.
3
The magic words, used correctly
The opinion must be stated to the VA's own standard: "at least as likely as not (a 50 percent or greater probability)." Weaker hedges like "possibly" or "may be related" fail; the standard is a specific legal threshold, and letters that don't invoke it get discounted.
4
A rationale, not a conclusion
The most common fatal flaw is the conclusory letter — an opinion with no reasoning. A rater is instructed to weigh the rationale: what in the records supports the connection, what the medical literature says about the mechanism, and why known alternative causes don't displace it. For Plantar Fasciitis specifically: Records showing tried-and-failed conservative care (orthotics, PT, injections) — the rating turns on treatment that did not bring relief, and on whether one or both feet are involved.
5
A licensed clinician's signature and credentials
The letter is medical evidence only when a licensed clinician — opining within their specialty — reviews it, exercises independent judgment, and signs it with their credentials. VA Claim Commander drafts the letter from your records and your story; your clinician signs it. An unsigned draft is a draft.

What a rater looks for in a Plantar Fasciitis nexus letter

The diagnosis and where it hurts
Plantar fasciitis in one or both feet, diagnosed on exam (heel pain worst with the first steps in the morning), with any imaging or podiatry notes.
Heel pain in service
Sick-call visits for heel or arch pain, inserts or night splints issued, a profile limiting running. These are the anchors for a direct claim.
The loading that caused it
Your duties and training: distance running, marches under load, long shifts standing on concrete or ship decks. The letter explains how repeated loading strains the plantar fascia.
The treatment history
Inserts, injections, physical therapy, and whether surgery was recommended. That history sets the rating, so the letter and your records should both show it.
Other causes addressed
Weight, post-service jobs on your feet, and running as a hobby. A strong letter names the ones in your file and explains why service still accounts for the condition.

Direct service connection for Plantar Fasciitis

Plantar fasciitis is claimed directly under 38 C.F.R. § 3.303, or secondary under § 3.310. The common routes:

Onset during training or duty
Heel pain that began in basic training, during a running-heavy job, or on deployment, and was treated or noted.
Secondary to flat feet
Flattened arches increase strain on the plantar fascia. If your flat feet are service-connected, plantar fasciitis can be claimed secondary to them.
Secondary to a gait change
A service-connected knee, ankle, hip, or back condition that makes you favor one leg can overload the foot on the other side.

Why nexus letters fail

Conclusory: an opinion with no rationale. The rater is told to weigh reasoning, and a bare “it’s related” weighs nothing.
Wrong standard: “may be related” or “possibly caused by” instead of “at least as likely as not.”
Ignores the other causes: a strong letter names the recognized non-service risk factors and explains why they don’t displace the service connection.
Outside the specialty: a clinician opining far from their field gets less weight than one whose practice covers the condition.
Unsigned: a draft nobody signed is not medical evidence — it is homework.

Who can write a Plantar Fasciitis nexus letter

Any licensed clinician qualified to give a medical opinion on Plantar Fasciitis: a physician, or another licensed clinician opining within their field. VA's test is whether the person is qualified by education, training, or experience (38 C.F.R. § 3.159(a)(1)). It does not have to be a VA doctor. Your own treating provider, who already knows your history, is often the strongest choice.

VA Claim Commander drafts the letter from your records and your own words, so your clinician starts from a complete draft; they review it, change what they disagree with, and sign only if it is their opinion.

If your own doctor won't write one, a licensed clinician through Commander Health can review your records and, only if the evidence supports it, write and sign a nexus letter for Plantar Fasciitis. It is a flat $500 that includes the records review, separate from any VA Claim Commander plan, and the clinician can decline if your records don't support an opinion.

Ask your own doctor: draft the request Commander Health nexus letter

Common questions

Do I need a nexus letter for a Plantar Fasciitis VA claim?

If service connection isn't already established for Plantar Fasciitis, a medical nexus opinion is usually the piece a rater weighs most heavily. It connects the diagnosis (5269) to your service — or to an already service-connected condition — using the "at least as likely as not" standard. Presumptive claims are the main exception.

What must a nexus letter for Plantar Fasciitis say?

Four things: the current diagnosis by name and diagnostic code; the connection theory (direct under 38 C.F.R. § 3.303, or secondary under § 3.310); the opinion stated to the "at least as likely as not (50 percent or greater probability)" standard; and a medical rationale grounded in your records and the medical literature — not a bare conclusion. It must be signed by a licensed clinician.

Who has to sign a nexus letter?

A licensed medical professional — a physician, or another clinician opining within their specialty (38 C.F.R. § 3.159(a)(1) asks for someone qualified by education, training, or experience). VA Claim Commander drafts the letter from your own records and story; a licensed clinician reviews, exercises independent judgment, and signs. An unsigned draft is not medical evidence. If your own doctor won't write one, a licensed clinician through Commander Health can review your records and, only if the evidence supports it, write and sign a nexus letter for Plantar Fasciitis. It is a flat $500 that includes the records review, separate from any VA Claim Commander plan, and the clinician can decline if your records don't support an opinion.

How does VA rate plantar fasciitis?

Under DC 5269 in 38 C.F.R. § 4.71a: 10% in general, whether one foot or both; 20% for one foot, or 30% for both, with no relief from both non-surgical and surgical treatment; and 40% with actual loss of use of the foot. If a surgeon recommended surgery but you are not a surgical candidate, VA evaluates under the 20 or 30 percent criteria.

Can I get separate ratings for flat feet and plantar fasciitis?

Sometimes, but the two overlap: both can involve pain on the bottom of the foot, and VA will not rate the same symptom twice (38 C.F.R. § 4.14). The letter and the exam should make clear which findings belong to which condition.

Do I need surgery to get more than 10 percent?

The 20 and 30 percent levels require no relief from both non-surgical and surgical treatment, or a surgeon's recommendation for surgery when you are not a surgical candidate. That recommendation, written down, can be the difference.

How the VA rates Plantar Fasciitis →Plantar Fasciitis research library →Nexus letter for flat feet →How VA rates plantar fasciitis →VA disability calculator →

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Nexus Letter for Plantar Fasciitis: What It Must Say

The short answer

What a nexus letter is

What a Plantar Fasciitis nexus letter must contain

The diagnosis, by name and code

The theory of connection

The magic words, used correctly

A rationale, not a conclusion

A licensed clinician's signature and credentials

What a rater looks for in a Plantar Fasciitis nexus letter

The diagnosis and where it hurts

Heel pain in service

The loading that caused it

The treatment history

Other causes addressed