The hit, which occurred in Thursday night's game between the Vancouver Canucks and the San Jose Sharks, saw Edler's shoulder make contact with rookie forward Hertl's head.
Despite Hertl's helmet flying off of his head he escaped injury, but Edler is still facing a hearing over the hit.
Originally a player would be cleared of punishment if a player was not deemed to be intentionally aiming to hit the opposing player's head but the recently re-written Rule 48 now allows a player to be suspended even for accidental contact.
If the NHL believe that the contact was avoidable then Edler could be facing a lengthy spell on the sidelines and almost definitely a hefty fine.
Following the re-write of the rule, it is believed that the decision made on Edler's punishment will set the yard stick for future breaches.
The Sharks won last night's game 4-1 with Hertl, the victim of the hit, scoring all four goals.
You can see the hit on Hertl in the video above.