1 ICD-9-CM 840.3 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 840.3 should only be used for claims with a date of service on or before September 30, 2015. 2  For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
The Interior (especially Fairbanks) and Far North regions are considered the best in Alaska for northern lights viewing, although the aurora can be spotted anywhere in Alaska.
Northern Lights and illuminated Teepee in Yellowknife, Northwest Territories Why Go: Areas around pristine Lake Superior in Ontario and Northern Canada's tundra back-country are prime viewing spots. Head to the town of Whitehorse within the Yukon Territory to best see the swirling lights.