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 Viewing Tours in Alaska, Premier Alaska Aurora Borealis Viewing Tour Packages, Deluxe Chena Hot Springs Northern Lights Packages, Bettles Lodge, Aurora Lodge Fairbanks, Yukon Territory Aurora Packages, Alaska Winter Tours, Alyeska Skiing, Alaska Winter Aurora Rail Tours.