These are 5 position alpha-numeric codes comprising the d series. All other level II codes and descriptors are approved and maintained jointly by the alpha-numeric editorial panel (consisting of CMS, the Health Insurance Association of America, and the Blue Cross and Blue Shield Association).
Alaska: Although Alaska enjoys a high volume of aurora activity, its cruises are not often mentioned as northern lights cruises. During the Alaska cruise season, it's rarely dark enough for the lights to be visible.
Northern lights is the name of a light phenomenon (aurora borealis) often seen in northern regions. The lights have been around since Earth formed an atmosphere, the dinosau â¦ rs saw it, early humans saw it and our descendants will see it. The Northern Lights, or Aurora Borealis, are colorful bands of light that appear in the sky. 2  This mystical view is a result of solar winds that blow solar particles into the 3  â¦. Images of the Northern Lights of Alaska Few sights are as beautiful as the Northern Lights.