Understanding Your Sciatic Nerve DBQ

The rule that decides most of these claims

There is one sentence in the rating schedule that does more work on a sciatic nerve claim than anything else, and VA prints it right on the examination form:

"For VA purposes, when nerve impairment is wholly sensory, the evaluation should be mild, or at most, moderate."

Read that carefully, because of what it means in dollars.

Sensory means what you feel: numbness, tingling, burning, pins and needles, pain. If your examination documents only those things, the rule caps you at moderate — which under the sciatic code is 20%.

Not because the pain isn't real. Not because the examiner disbelieved you. Because the regulation says a wholly sensory impairment is mild or at most moderate, full stop.

Getting above 20% requires the examination to document something beyond sensation: weakness, reflex changes, muscle atrophy, or an altered gait. Those are objective findings — things the examiner tests and observes rather than things you report.

So the whole game on this form is whether the hands-on testing actually happened and actually got written down.

How the ratings work

Diagnostic Code 8520 — Sciatic nerve

Related codes cover neuritis (8620) and neuralgia (8720) — which of these applies to a given condition is a medical and adjudicative determination, not something to assume.

Here is an important difference from some other conditions. On an ankle claim, the rating criteria define "moderate" and "marked" in degrees, so a veteran can check the arithmetic. DC 8520 defines none of its words. Mild, moderate, moderately severe and severe are left to judgment.

Which means you have no arithmetic to check — and it means the wholly-sensory rule, and the objective findings that lift you past it, are the only real leverage in the record.

The five sections that set your tier

The Peripheral Nerves DBQ runs fourteen pages and eighteen sections. Five of them are hands-on testing, and those five are where a rating above 20% comes from.

Section IV — Muscle Strength Testing. Graded strength in the affected muscle groups. Weakness is not a sensory finding. If your leg gives out, if you cannot push off properly, if the examiner can overcome your resistance — that belongs here, in a grade, not in a narrative.

Section V — Reflex Exam. Deep tendon reflexes, including the ankle jerk. A diminished or absent reflex is about as objective as evidence gets, and it takes the examiner ten seconds. It is also completely independent of how well you describe your symptoms.

Section VI — Sensory Exam. Light touch tested by area. This establishes the sensory component — the part that, on its own, caps you at moderate.

Section VII — Trophic Changes. Skin, hair and nail changes, and muscle atrophy. Worth noticing: the 60% tier names "marked muscular atrophy" specifically. If there is visible wasting in the calf or thigh, this is the section that has to capture it. Measurements, not adjectives.

Section VIII — Gait. How you actually walk. A limp, a foot slap, guarding, an inability to heel-walk or toe-walk. This is a functional consequence anyone can see, and it is objective.

A sixth section matters at the severe end: Section XIII asks about the remaining effective function of the extremity — whether the limb still serves a purpose. That question only arises in serious cases, but it exists.

The gap that costs veterans money

An examiner who spends the appointment on your symptoms — how much it hurts, where it goes numb, how often — and then moves quickly through strength, reflexes and gait has produced an exam that looks thorough and reads as wholly sensory.

Under the rule at the top of this page, that caps the rating at 20% no matter how weak the leg actually is.

This is the sciatic version of a pattern that repeats across VA examinations: the section that feels least important during the appointment is often the one carrying the rating. Your symptoms establish that something is wrong. The objective testing establishes how much.

What else the form covers

Diagnosis and medical history, including onset and course. The form also asks your dominant hand — it covers upper-extremity nerves too, so expect that question even though it has nothing to do with a sciatic claim.

Symptoms, graded and by side. Constant pain, intermittent pain, paresthesias or dysesthesias, and numbness — each rated none, mild, moderate or severe, separately for right and left. Like several other VA forms, this one runs both sides in parallel throughout.

Nerves affected. Section 11A is the sciatic nerve specifically, where the examiner checks complete or incomplete paralysis, the severity, and the side affected.

Assistive devices, other findings, diagnostic testing, functional impact, remarks.

How to prepare

Describe function, not just sensation. "It goes numb" is a sensory report. "My foot catches on stairs and I've stopped trusting the leg on a ladder" describes something else entirely — and it points the examiner toward the sections that matter.

Concretely, mention if any of these are true:

• The leg gives way or feels like it might
• You catch your toe or scuff that foot
• You hold a handrail you didn't need before
• The calf or thigh looks smaller than the other side
• You have changed how you walk, stand, or work because of it

Do not push through the strength testing. The instinct when someone says "resist me" is to give everything you have for two seconds. That is not what is being measured. If the limb is weak, let it be weak — a moment of stoicism there can cost you a tier.

Bring anything objective you already have: EMG or nerve conduction studies, imaging, physical therapy notes documenting strength or gait, and any record of the condition over time.

Checking the completed exam

When you get the DBQ back, look past the symptom checkboxes:

1. Was muscle strength actually graded, or left blank or uniformly normal?
2. Were reflexes tested and recorded?
3. Is there any note about atrophy — and if you have visible wasting, was it measured?
4. Does the gait section describe how you actually walk?
5. Does the severity checked in the sciatic nerve section match what the rest of the form shows?

If the exam documents only sensory findings while you have real weakness or atrophy, that mismatch is worth raising with an accredited representative. It does not mean anyone acted in bad faith — a short appointment and an unremarkable-looking leg produce that result honestly. But the rule at the top of this page means the consequence is a capped rating, and that is worth addressing.