CIDP, Active Treatment Phase

DC 8599-8520Neurological38 CFR 4.124a, DC 8599-8520

The active treatment phase of chronic inflammatory demyelinating polyneuropathy, an autoimmune disorder that damages the protective covering of peripheral nerves. During active treatment with immunotherapy, steroids, or plasma exchange, symptoms can fluctuate significantly. Rated by analogy to sciatic nerve paralysis based on the degree of nerve involvement.

How the VA rates this condition

The VA rates this condition based on how much it affects your ability to work and carry out daily activities. The examiner will focus on the functional limitations your condition causes, not just the diagnosis itself.

Diagnostic code

DC 8599-8520

Rating range

10% – 80%

Rating levels

Rating criteria are defined in 38 CFR 4.124a, DC 8599-8520. This guide presents a plain-language summary and is not a substitute for the full regulatory text. Always consult a VSO or VA-accredited attorney for case-specific advice.

Rating Levels

You have near-complete paralysis — profound weakness and sensory loss with almost no functional use of affected limbs despite maximum treatment.

What the VA looks for

Near-complete or complete motor loss in multiple extremities
Profound sensory loss throughout affected limbs
Dependent on wheelchair or bedridden
Maximum treatment with minimal or no response
Requires full-time personal assistance

Common Pitfalls

⚠Not distinguishing active CIDP from stable CIDP — during active treatment, symptoms often fluctuate. Document your worst functional days, not just how you feel on treatment days when symptoms may temporarily improve.
⚠Not getting serial EMG and nerve conduction studies — these objectively track disease progression and treatment response. Ensure they are done at regular intervals to support your claim.
⚠Failing to document treatment side effects — IVIG, steroids, and plasmapheresis all cause significant side effects (fatigue, infections, weight gain, osteoporosis) that may warrant separate claims.
⚠Not filing for individual nerve involvement — CIDP can affect multiple nerve groups. Each affected nerve distribution may be rated separately rather than lumped into one rating.
⚠Not keeping a symptom diary during treatment cycles — CIDP symptoms often worsen between treatments. Documenting the pattern of relapse and remission helps show the true severity.

Related DBQ Forms

DBQ Peripheral Nerves

View evidence checklist →See secondary conditions →

Condition Rating Guides

Understand what the VA looks for at each rating level — loading conditions…

CIDP, Active Treatment Phase

How the VA rates this condition

Diagnostic code

DC 8599-8520

Rating range

10% – 80%

Rating levels

Rating Levels

You have near-complete paralysis — profound weakness and sensory loss with almost no functional use of affected limbs despite maximum treatment.

What the VA looks for

Near-complete or complete motor loss in multiple extremities
Profound sensory loss throughout affected limbs
Dependent on wheelchair or bedridden
Maximum treatment with minimal or no response
Requires full-time personal assistance

Common Pitfalls

⚠Not distinguishing active CIDP from stable CIDP — during active treatment, symptoms often fluctuate. Document your worst functional days, not just how you feel on treatment days when symptoms may temporarily improve.

⚠Not getting serial EMG and nerve conduction studies — these objectively track disease progression and treatment response. Ensure they are done at regular intervals to support your claim.

⚠Failing to document treatment side effects — IVIG, steroids, and plasmapheresis all cause significant side effects (fatigue, infections, weight gain, osteoporosis) that may warrant separate claims.

⚠Not filing for individual nerve involvement — CIDP can affect multiple nerve groups. Each affected nerve distribution may be rated separately rather than lumped into one rating.

⚠Not keeping a symptom diary during treatment cycles — CIDP symptoms often worsen between treatments. Documenting the pattern of relapse and remission helps show the true severity.