A rare lung condition where protein builds up in the air sacs and may cause breathing difficulty.
Because the ratings depend on specific breathing test numbers, pulmonary function test reports are the most direct evidence. These reports should clearly state your measured FVC and DLCO (SB) values alongside the predicted values, so the percentage of predicted can be calculated. If exercise testing was done, records showing your maximum oxygen consumption in ml/kg/min and whether a cardiorespiratory limitation was identified are relevant to the 100% and 60% levels.
For the 100% rating, records documenting a diagnosis of cor pulmonale or pulmonary hypertension, such as echocardiogram or right-heart catheterization results, are directly on point. A prescription or medical order for outpatient oxygen therapy also supports that level.
Statements from you or people who know you describing how breathlessness or fatigue limits your work, daily activities, or exertion can help show the real-world impact of the test findings. Treatment records, hospitalization notes, and pulmonologist visit summaries that track changes in your lung function over time round out the picture.
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.
