The Indian captain is set to miss the international friendly against Oman on March 25 in Dubai.
With this, Mumbai City remained on second spot with 34 points from 17 matches while Bengaluru FC jumped to sixth with 22 points from 18 matches.
In a first for ATK Mohun Bagan this season, two first-half goals signalled the downfall for a beleaguered Bengaluru FC, who were punished for their defensive mistakes.
Coach Csaba Laszlo's side put up a spirited performance but their misfiring attack couldn't get past Bengaluru keeper Gurpreet Singh Sandhu.
Aridane Santana pulled one back in the 86th minute before Fran Sandaza scored a 90th-minute equaliser as BFC's winless run extended to eight games.
Paartalu struck in the 82nd minute after Diego Mauricio had put Odisha in front in the eighth minute.
Rahul K P made amends in Kerala Blasters' last-gasp win over Bengaluru FC.
Bengaluru stay seventh in the table with 13 points from 12 matches, while Blasters moved up to ninth with 13 points from 12 games.
Luis Machado (27') opened the scoring for the Highlanders but Rahul Bheke (49') cancelled out his goal after the break to help the Blues salvage a point.
The former champions had seen three losses on the trot with the last one being against Mumbai City FC on Tuesday and club director Parth Jindal made it known that Cuadrat was not sticking to the "team philosophy" this season.