Stokes, who top-scored in England's first innings with a brisk 100, received one demerit point for reacting in frustration after being edged to the boundary by Shai Hope.
Stokes subsequently admitted to making "an inappropriate comment" which was clearly audible through the stump microphone and also heard by the match officials, the ICC said in a statement.
The 26-year-old now has three demerit points and one more in the 24-month period would mean they would be converted into suspension points.
Two suspension points equate to a ban from one test or two one-day or two Twenty20 internationals, whatever comes first.
England won the opening match of the three-test series by an innings and 209 runs but West Indies go into the third day of the second contest with a 71-run lead and five first innings wickets remaining.
First Published: August 27, 2017, 4:20 PM IST