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09NT Frontal Sinus, Left
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09NT0 Open
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09NT0Z No Device
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09NT0ZZRelease Left Frontal Sinus, Open Approach
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09NT3 Percutaneous
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09NT3Z No Device
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09NT3ZZRelease Left Frontal Sinus, Percutaneous Approach
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09NT4 Percutaneous Endoscopic
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09NT4Z No Device
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09NT4ZZRelease Left Frontal Sinus, Percutaneous Endoscopic Approach
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09NT7 Via Natural or Artificial Opening
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09NT7Z No Device
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09NT8 Via Natural or Artificial Opening Endoscopic
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09NT8Z No Device
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09NT8ZZRelease Left Frontal Sinus, Via Natural or Artificial Opening Endoscopic
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09NTX External
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09NTXZ No Device
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