The diagnosis and treatment of sleep disorders have come a long way in recent years. In the past, people who snored might be advised to sew a tennis ball onto the back of their pajama top. The “snore ball” would discourage them from sleeping on their back and might quiet their droning. Or a doctor might use the “dog index” to measure poor sleep: If your dog generally sleeps with you but by morning has left the bed more than half the time, it may be because you’re such a loud, restless sleeper that the dog has gone elsewhere for some peace and quiet.

Now, doctors with special training diagnose and treat more than 80 sleep disorders — from obstructive sleep apnea to narcolepsy — at special centers with labs where a patient’s every sleeping moment may be recorded and measured.

Insurance usually covers the diagnosis and treatment of sleep problems, with some exceptions. For example, snoring on its own is not a medical problem and insurance won’t cover its treatment, to the great disappointment of many a snorer’s bed partner.

Obstructive sleep apnea, which occurs in at least 2 to 4 percent of Americans, is another matter entirely. The consequences of untreated sleep apnea can be extremely serious.

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retrived July 20, 2011 http://www.washingtonpost.com/national/health-science/health-insurance-usually-covers-treatment-for-apnea-and-other-sleep-disorders/2011/07/07/gIQAQ0pU9H_story.html