Larynx, stenosis of (DC 6520) | VA Rating Tool

Diagnostic Code6520
CategoryThe Respiratory System
SubcategoryNose and Throat
Also Known AsLarynx, stenosis of
CFR Section38 CFR § 4.97
View Official CFR Source ↗
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Rating Criteria
Rating Criteria
100% 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
60% FEV-1 of 40- to 55-percent predicted, with Flow-Volume Loop compatible with upper airway obstruction
30% FEV-1 of 56- to 70-percent predicted, with Flow-Volume Loop compatible with upper airway obstruction
10% FEV-1 of 71- to 80-percent predicted, with Flow-Volume Loop compatible with upper airway obstruction