What you have to prove
Show either (1) maximal voluntary ventilation equal to or less than 40 percent of predicted, OR (2) a need for invasive mechanical ventilation or noninvasive ventilation for at least 8 hours per day.
Medical evidence SSA expects
Pulmonary function tests, ventilator logs, sleep studies, and neurology evaluations confirming the underlying neuromuscular disorder.
Common misconceptions
Daytime-only BiPAP usually doesn't meet the 8-hour threshold. Continuous overnight ventilation plus daytime support typically does.
Didn't meet the listing? You can still qualify via a Medical-Vocational
Allowance — SSA's determination that your residual functional capacity, combined with
your age, education, and work history, leaves no jobs you can do. See our
appeals guide for what to do after an initial denial.