Before his final summit push on Monday morning, Mr. Kuriki, 35, had updated his social media accounts to say that he was suffering from a cough and fever but that he thought he could continue climbing.

Speaking by telephone from base camp, Gyanendra Shrestha, an official with the Nepalese Ministry of Tourism, said Mr. Kuriki’s body would be airlifted to Kathmandu, the capital, for an autopsy to ascertain the exact cause of death.

Mr. Gurung, the expedition organizer, said Mr. Kuriki had also died near Camp Three.

Over the years, Mr. Kuriki amassed thousands of followers on social media and often spoke to sold-out lecture halls about the importance of perseverance.

In 2012, he lost nine of his fingers to frostbite. Two years later, he returned to mountaineering and finished a solo climb of Broad Peak in the Himalayas, the 12th-highest peak in the world, without the supplemental oxygen that most climbers use at such altitudes, where the air is dangerously thin.