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09NC Mastoid Sinus, Left
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09NC0 Open
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09NC0Z No Device
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09NC0ZZRelease Left Mastoid Sinus, Open Approach
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09NC3 Percutaneous
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09NC3Z No Device
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09NC3ZZRelease Left Mastoid Sinus, Percutaneous Approach
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09NC4 Percutaneous Endoscopic
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09NC4Z No Device
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09NC4ZZRelease Left Mastoid Sinus, Percutaneous Endoscopic Approach
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09NC7 Via Natural or Artificial Opening
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09NC7Z No Device
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09NC8 Via Natural or Artificial Opening Endoscopic
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09NC8Z No Device
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09NC8ZZRelease Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic
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09NCX External
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09NCXZ No Device
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