This reference uses VA rating codes. For a code from a medical record, check ICD-10-CM and the service date. A clinical code alone does not establish a VA rating or a matching VA diagnostic code.
Neuralgia
Neurological conditions and convulsive disorders · 38 CFR § 4.124a
Diagnostic Code 8405 is the VASRD entry for Neuralgia. VA applies the controlling criteria, shared formulas, and special instructions shown in 38 CFR Part 4. VMC presents this material for education and reference; it does not determine a Veteran's diagnosis, service connection, or evaluation.
Recorded index labels
These labels are already stored for this diagnostic code. They are not a new condition, rating, or medical relationship.
Appendix B
- Neuralgia, fifth cranial nerve.
Appendix C
- Fifth (trigeminal)
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Rate-under relationships
Rate under / reference DC 8205
§ 4.124: neuralgia is rated on the same scale for the nerve involved, with a maximum equal to moderate incomplete paralysis; tic douloureux/trifacial neuralgia may be rated up to complete paralysis.
Special rating instructions
- § 4.124 Neuralgia, cranial or peripheral.
Body system and anatomy metadata
Body system: Neurological conditions and convulsive disorders
Anatomy / region tags: peripheral nerves, nervous system
These tags support discovery and body-map compatibility. They do not establish Veteran-specific laterality or entitlement.
Official VA DBQ references
DBQ catalog: va-dbq-2026.09.16 · Retrieved 2026-09-16. Official VA inventory ↗
- ALS (Lou Gehrig's Disease) ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Central Nervous System and Neuromuscular Diseases ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Cranial Nerve Conditions ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Diabetic Peripheral Neuropathy ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Fibromyalgia ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Headaches (including Migraines) ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Multiple Sclerosis (MS) ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Narcolepsy ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Parkinson's Disease ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Peripheral Nerves ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
- Seizure Disorders (Epilepsy) ↗ Related resourceCatalog category: Neurological
Related by body system only. No reviewed condition-specific form match or requirement has been established.
VA maintains some examination forms that are not available for public use. VMC does not infer a one-code-to-one-DBQ relationship.
Evidence information
When reviewing the criteria, useful evidence categories can include diagnosis and treatment records, objective testing identified by the schedule, documented frequency/duration/severity when the criteria use those concepts, and functional effects described in medical or lay evidence. The relevant evidence depends on the actual claim and medical facts.
VMC does not diagnose conditions, guarantee a percentage, or advise anyone to exaggerate symptoms.
Related diagnostic codes
Legal basis and source identification
38 CFR § 4.124a · Source current through 2026-08-06 · Verified 2026-08-10
Registry content release: vasrd-registry-2026.08.1