VA BENEFITS REFERENCE
DC 6520: Larynx, Stenosis Of, Including Residuals Of Laryngeal Trauma (Unilateral Or Bilateral)
Read VA diagnostic code 6520 for Larynx, stenosis of, including residuals of laryngeal trauma (unilateral or bilateral): published criteria, regulatory notes, related codes and official sources checked October 25, 2026.
Published criteria from 38 CFR 4.97, current through 2026-10-22. Historical decisions may require a different version. This reference does not diagnose a condition or determine an evaluation.
The Respiratory System · All Diagnostic Codes
DC 6520: Larynx, Stenosis Of, Including Residuals Of Laryngeal Trauma (Unilateral Or Bilateral)
Diagnostic code 6520 addresses Larynx, stenosis of, including residuals of laryngeal trauma (unilateral or bilateral). Read its specific instructions together with any shared formula, notes and linked provisions. These criteria describe evaluation after the applicable entitlement requirements are met; this reference does not diagnose a condition or determine a claim.
| Rating | |
|---|---|
| 6520 Larynx, stenosis of, including residuals of laryngeal trauma (unilateral or bilateral): | |
| Forced expiratory volume in one second (FEV-1) less than 40 percent of predicted value, with Flow-Volume Loop compatible with upper airway obstruction, or; permanent tracheostomy | 100 |
| FEV-1 of 40- to 55-percent predicted, with Flow-Volume Loop compatible with upper airway obstruction | 60 |
| FEV-1 of 56- to 70-percent predicted, with Flow-Volume Loop compatible with upper airway obstruction | 30 |
| FEV-1 of 71- to 80-percent predicted, with Flow-Volume Loop compatible with upper airway obstruction | 10 |
| Note: Or evaluate as aphonia (DC 6519). | |
| 1 Review for entitlement to special monthly compensation under § 3.350 of this chapter. | |
What The Criteria Measure
- Does the decision identify diagnostic code 6520, and does the medical record describe the condition named by this code?
- Are the required clinical measurements, testing methods and any stated exceptions documented by a qualified clinician?
- Have the code-specific notes and cross-references been read before comparing any listed evaluation?
Related Public DBQs
Editorial subject matches, not official VA code-to-form assignments. Read the form scope and clinician instructions.
Regulatory Cross-References
Shared Rules And Regulatory Context
Context provisions do not create an additional evaluation automatically assigned to every condition.
Related Guides
Official Sources
Last verified 2026-10-25. Source publication or legal effective dates are shown separately where available.
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