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.
Alaskaâs Northern Lights. We often get inquiries from folks interested in seeing the Aurora Borealis, locally known in Alaska as the Northern Lights. During the summer months, it is very unlikely that you would see the Northern Lights due to Alaskaâs Midnight Sun.