A gold color metal and enamel device 1 3/16 inches (3.02 cm) in height overall consisting of a gold disc surmounted by and slightly extended over a green hexagon, with one angle up, bearing a scarlet Greek cross, charged at center with a gold fleur-de-lis, in front of and slightly over a maroon disc all in back of in base, three stylized snow-capped (white) maroon mountain peaks.

The disc and hexagon signify the unit's six World War II campaigns, the mountains referring to the Aleutian Islands campaign; the green color alluding to the green fields of Europe with the fleur-de-lis referring to the Normandy, Northern France and Ardennes-Alsace campaigns and the maroon disc to the Rhineland and Central Europe campaigns.  The mountains further refer to the mountainous terrain of Northern New York State home area of the 310th Field Hospital.  The color green was also the ancient color for health.  Maroon and white are colors used by the Army Medical Department.

The distinctive unit insignia was approved on 5 March 1971.