Yes. Veterans can service-connect their sleep apnea. The first way to service-connect sleep apnea is by direct service-connection where you will show your sleep apnea started while in the service. The second path to service-connecting sleep apnea is through secondary service-connected impairments like acid reflux, asthma, chronic rhinitis, heart disease, hypertension, sinusitis, strokes, and diabetes.
Learn more about service-connecting sleep apnea here: