Chouhan met 64-year-old Swaraj in the Cardio-Neuro Centre of the hospital where she undergoing treatment since April 25, AIIMS sources said.
"Chouhan reached at 7.35 PM, he met her and enquired about her health and left at around 8 PM," a source said.
Earlier during the day, Rahul visited Swaraj and spent some time.
Swaraj has had a good rapport with Rahul and his mother and Congress President Sonia Gandhi since she was the Leader of Opposition in the last Lok Sabha.
The hospital had yesterday said that Swaraj was showing some signs of improvement.
AIIMS has also set up a medical board for formulating a combined treatment strategy for the Minister who was admitted with fever and chest congestion with features of pneumonia.