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Foot Drop (Peroneal Nerve Paralysis) VA Disability Rating

Diagnostic code 8521
By the editorial deskUpdated Jun 13, 2026Sources verified Jun 13, 2026
Quick summary
Foot drop from common peroneal (fibular) nerve injury is rated under diagnostic code 8521: 40 percent for complete paralysis with foot drop and inability to dorsiflex, 30 percent for severe incomplete paralysis, 20 percent for moderate, and 10 percent for mild incomplete paralysis.
Key requirements
  • Service connection requires a current diagnosis, an in-service event or exposure, and a medical link (nexus) between the two.
  • VA assigns ratings of 10% to 40% under diagnostic code 8521, using the criteria in the rating table below.
  • The percentage assigned turns on Severity of peroneal paralysis.
  • Measured at the C&P exam: Neurological exam: motor, sensory, reflexes.
This page explains common evidence VA may consider when rating this condition. It is not medical advice and does not diagnose any condition. Talk with a licensed medical professional about diagnosis and treatment, and with a VA accredited representative (38 CFR 14.629) about a specific claim.
Ratings
10% to 40%
Diagnostic code
8521
Decided on
Severity of peroneal paralysis
Measured by
Neurological exam: motor, sensory, reflexes
The five parts of a compensation decisionA current disabilityAn in service eventA connectionSeverity under the criteriaAn effective dateHow the pieces fit together
RatingCriteria
10%Mild incomplete paralysis of the common peroneal nerve.
20%Moderate incomplete paralysis.
30%Severe incomplete paralysis.
40%Complete paralysis: foot drop and slight droop of the first phalanges of all toes, cannot dorsiflex the foot, extension of proximal phalanges of toes lost, abduction of foot lost, anesthesia covers entire dorsum of foot and toes.
Rule: 38 CFR 4.124a, DC 8521Source: eCFR, Title 38 Part 4Verified: 2026-06-13Change history: no criteria change recorded since publicationEach percentage links to itself; cite with the anchor.

Illustrative scenarios showing how the criteria above are applied. These are educational examples, not a prediction of any individual veteran's rating.

Mild peroneal nerve involvement

Illustrates 10%

Situation. There is mild incomplete paralysis of the common peroneal nerve.

How the criteria apply. Mild incomplete paralysis of the common peroneal nerve rates 10 percent under DC 8521.

Severe involvement

Illustrates 30%

Situation. There is severe incomplete paralysis with significant foot drop.

How the criteria apply. Severe incomplete paralysis rates 30 percent under DC 8521 (complete paralysis rates 40 percent).

How this is examined. Peripheral nerve ratings in 38 CFR 4.124a turn on the degree of paralysis of the nerve involved: mild, moderate, moderately severe, or severe incomplete paralysis, or complete paralysis with the specific findings listed for that nerve. The examiner grades this from motor strength, muscle atrophy, reflexes, and sensory testing, often supported by a nerve conduction study or EMG. When the involvement is wholly sensory, the rating is for the mild or at most the moderate degree. A goniometer measures joint motion for the separate spine or joint rating; it does not determine the nerve percentage. Read 38 CFR 4.124a

Complete foot drop with a slapping gait and a brace is the 40. The incomplete tiers turn on how much dorsiflexion strength remains and the sensory loss pattern.

What VA looks at

EMG and nerve conduction confirming the peroneal injury, dorsiflexion strength, gait and brace use, and the cause: knee injury or surgery, fibular fracture, compartment syndrome, or radiculopathy.

Common exam and DBQ topics

Tripping and gait, brace use, numbness pattern, the injury or surgery behind it.

Evidence that usually matters

EMG reports, orthopedic and neurology notes, AFO brace prescriptions, gait observations.

Common misunderstandings

Foot drop after knee surgery or from L5 radiculopathy is rated under the nerve code, separate from the spine or knee rating itself, subject to not paying twice for the same impairment. An L5 cause is rated as sciatic radiculopathy instead, which has higher tiers.

If a VA decision on this came back wrong

You have three review lanes, pick the one that fits the situation.

Under the Appeals Modernization Act (38 CFR 3.2500), a Higher Level Review or a Board Appeal must be requested within one year of the decision notice. A Supplemental Claim can generally be filed at any time after the decision, but filing any of the three within that one year window is what keeps the claim continuously pursued and protects the original effective date; wait longer and a later award may start from the new filing date instead.

Related conditions

Background reading

Supplemental articles that connect to this condition.

State benefits stack with VA disability

Your rating may also qualify you for state-level benefits.

VA compensation is federal, but every state layers its own benefits on top. Many states reduce or waive property tax for disabled veterans, and many offer license, tuition, or vehicle benefits at various rating levels. The thresholds, dollar amounts, and eligibility rules vary widely from state to state, so the reliable answer is always your own state's guide.

See your state's benefitsReviewed quarterly

Put this rating to work

Free calculators and a guide to turn a rating percentage into real numbers. Your figures stay on your device unless you ask us to email an estimate.

Secondary conditions and case specific outcomes are fact specific. We do not tell you what claims to file. Consider talking with a VA accredited representative.
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Editor's note

Most recent human review on this page, July 5, 2026. Below is the review history across this page, its citations, and the supplemental articles it links to.

  1. July 5, 2026articleAppealing or Continuing a VA Decision: The Three Lanes Under the AMA
  2. July 5, 2026articleThe C&P Exam: What to Expect and How to Prepare
  3. June 13, 2026conditionThis page
  4. June 13, 2026citation38 CFR Part 4 Schedule for Rating Disabilities
Printed from The Veteran Benefit Desk, https://veteranbenefitdesk.com/conditions/foot-drop. Figures reflect this page as published. Rates change each December; confirm current amounts at veteranbenefitdesk.com before relying on them.
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