Maguire went tumbling over the touchline when Batshuayi challenged him to the ball and the Red Devils captain's outstretched boot caught the Belgian attacker in the groin.
The incident was reviewed by VAR but the England international was not punished and scored the second goal as United went on to do the double over Chelsea for the first time in 35 years.
Maguire insisted he meant no harm and that he straightened his leg because he thought the Chelsea forward was going to fall on him.
“I knew I caught him,” Maguire told Sky Sports.
"I thought he was going to fall on me. It was a natural reaction"— Sky Sports Premier League (@SkySportsPL) February 17, 2020
Harry Maguire explains his clash with Michy Batshuayi which VAR decided was not a red card
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“But I felt like he was going to fall on me and my natural reaction was to straighten my leg, if he was to fall on me to hold him up. Obviously I’ve got studs on my boots and it probably looks worse than it does on TV but it was my natural reaction. It wasn’t a kick out, it wasn’t any intent or anything like that.
“It was just my natural reaction to straighten my leg and, if he was going to fall on me, just to hold him up. I knew I did catch him and I knew at the time but I think it’s the right decision in the end.”