What gets counted as "Healing Done"?

What gets counted as "Healing Done" in the League of Legends stats? The scoreboard after a game shows me doing all of 71 healing (some strangely small value), and other non-overt healers doing conspicuous amounts.

The enemy Graves had the summoner spell Heal, which perhaps accounts for his healing, but how did Malzahar or Zilean do that much healing? Does spell vamp count as healing but not life steal (I had Bloodthirster for over half the game and easily healed thousands with it)? Does shielding count (or what part of the shield gets beat on)?

Solution 1:

I suspect that your 71 HP "Healing" was a result of killing 2-3 neutral creep camp leaders while hurt over the course of the game and receiving the minor heal they now give on death as part of the jungle revamp. The tally shows you as killing 34 Neutral creeps. If you killed about 1/3 of them when you were hurt (so that the heal would have an effect) that comes out to around 71 HP.

Solution 2:

The Ziggs Patch Notes (serendipitously) presented a major clue to this:

• Heal over time effects now show as health regen per 5 rather than discreet heals

Shen's Q, Ki Strike, is a Heal over Time. And look who has the top healing on the enemy team!

The other champions have so much healing because they hit Ki-Strike targets or were revived by Zilean's ult (as these are buffs, rather than direct effects, they count as healing for their target, and not the buff's provider).

As to your 71 - that's probably from a jungle creep's health relic. Either you didn't kill many jungle creeps, or you killed them while at full health from your bloodthirster (and thus didn't need the heal).

Here's a game with Shen post-patch.

The only one with significant healing now is Mordekaiser, who gets healing from his ult (it's a discrete heal on the initial nuke, and then each subsequent tick).