Malignant neoplasm of larynx (unspecified)
Because the rating levels turn almost entirely on objective breathing test results, pulmonary function test records are the most direct evidence. Spirometry reports showing your FEV-1 value and FEV-1/FVC ratio, as well as DLCO (SB) test results, correspond directly to the thresholds that separate one rating level from the next.
For the 100% level, records showing a cardiopulmonary exercise test with maximum oxygen consumption below 15 ml/kg/min, an echocardiogram or cardiac catheterization report documenting pulmonary hypertension or right ventricular hypertrophy, hospital records for episodes of acute respiratory failure, or a prescription and records of use for outpatient oxygen therapy would all be relevant.
Statements from you or people who know you about how your breathing limits physical activity, work tasks, or daily routines can help VA understand the real-world impact of your test results. Treatment records from pulmonologists or other treating providers, showing ongoing care and any changes in your condition over time, also support the overall picture of severity.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.
