In a large saucepan, place a steamer basket over 1 in. water. Place cod in basket. Bring water to a boil. Reduce heat to maintain a low boil; steam, covered, until fish just begins to flake easily with a fork, 8-10 minutes.
Meanwhile, in a small saucepan, whisk cornstarch, coconut milk and orange juice until smooth. Add chili sauce, ginger and soy sauce. Cook and stir over medium heat until thickened, 1-2 minutes. Stir in oranges, green onion, almonds and sesame oil; heat through. Serve with cod; sprinkle with cilantro.