* CSL boosts healthcare sector * Markets await cues from U.S. Fed meet March 16 (Reuters) - Australian shares finished nearly 1% higher on Tuesday to notch their best session in more than a week, as the benchmark tracked overnight gains on Wall Street, while lower U.S. bond yields prompted heavy buying in healthcare and technology stocks. The S&P/ASX 200 index ended 0.8% higher at 6,827.10, after rising as much as 1.3% earlier in the day - its biggest intraday percentage gain since March 8. The benchmark closed 0.1% higher on Monday. Major Wall Street indexes closed at record highs in the previous session, as investors eyed an economic recovery from