The highest peak in the Andes outside Argentina and Chile is Huascarán, in Peru.
Huascarán is the summit of the Cordillera Blanca in the Peruvian Andes. Its southern summit is traditionally listed at 6,768 meters, making it Peru’s highest point and the highest mountain in the northern Andes. The range lies in Ancash Department, near the city of Huaraz.
The mountain has two principal summits. The northern summit was first climbed in 1908, while the higher southern summit was climbed by an Austro-German expedition on 20 July 1932. Huascarán is also called Mataraju, a Quechua name commonly interpreted as “twin snow mountain.”
A common mix-up is Chimborazo, Ecuador’s highest mountain. Chimborazo is exceptionally far from Earth’s center because of Earth’s equatorial bulge, but it is not higher by conventional elevation above sea level. Aconcagua, in Argentina, is higher than Huascarán but is excluded by the question.