"I'm back," Hakimi wrote on Twitter.
The Moroccan international missed Inter Milan's Champions League 2-2 draw against Borussia Moenchengladbach in midweek after testing positive hours before kick-off.
The 21-year-old, who was asymptomatic, on Friday returned a first negative test and had a second test immediately after, Inter Milan said.
Antonio Conte's side are hopeful he will be authorised to join his teammates for Saturday's Serie A match at Genoa.
Inter Milan are sixth in the table, five points behind leaders AC Milan, who won last weekend's derby 2-1.
Hakimi joined Inter from Real Madrid in the close-season after a successful two-year loan at Borussia Dortmund.
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