The England batsman was found to have violated Article 2.3 of the code, which relates to “use of an audible obscenity during an international match”.
Bairstow used an audible obscenity after his dismissal in the seventh over, which was picked up by the stump mic and heard on TV.
After the day’s play, Bairstow admitted the offence and accepted the sanction proposed by Andy Pycroft of the Emirates ICC Elite Panel of Match Referees and, as such, there was no need for a formal hearing.
The charge was levelled by on-field umpires Wayne Knights and Chris Gaffaney and third umpire Christopher Brown as well as fourth umpire Shaun Haig.
Level 1 breaches carry a minimum penalty of an official reprimand, a maximum penalty of 50 per cent of a player’s match fee, and one or two demerit points.