The coalition said in a statement that it had completed a review in November of 101 reports of potential civilian casualties, of which 92 were deemed non-credible.
The remaining nine, relating to strikes between March 20 and October 17, were considered credible and resulted in 11 civilian casualties.
The coalition also added another five civilian casualties to its count, based on previous reports of attacks it had earlier said it was not responsible for.
As of the end of November, 603 reports were still being examined.
More From This Section
Coalition forces have conducted 28,562 strikes against IS targets in three years, resulting in 1,799 reports of potential civilian casualties of which only 208 were deemed credible, the statement read.
According to a recent New York Times survey in Iraq, 20 percent of coalition air strikes have resulted in civilian casualties, a much higher proportion than the coalition's claimed 0.36 percent.