MIAMI — The NFL’s concussion protocol wasn’t strictly followed when Miami Dolphins quarterback Matt Moore was treated for a hit to the chin and mouth in a first-round playoff game, the league said Wednesday.

Because Moore was bleeding from the mouth, he was allowed to return to the game too quickly at Pittsburgh, the league said in a statement. The determination was made after the NFL and the NFL Players Association reviewed the case.

No disciplinary action against the Dolphins will be taken, but their staff must undergo a full review of the protocol, and future deviation may lead to fines against the team, the NFL said. There is no indication competitive issues had an impact on the care Moore received, nor did he demonstrate any concussion symptoms during or following the game, the league said.

Moore was hit in the second quarter as he threw a pass, and the play drew a roughing-the-passer penalty on Pittsburgh’s Bud Dupree. Dolphins medical staff attended to Moore on the field, and he was evaluated on the sideline by an independent neurological consultant and team physician before returning to the game.