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09NN Nasopharynx
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09NN0 Open
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09NN0Z No Device
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09NN0ZZRelease Nasopharynx, Open Approach
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09NN3 Percutaneous
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09NN3Z No Device
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09NN3ZZRelease Nasopharynx, Percutaneous Approach
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09NN4 Percutaneous Endoscopic
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09NN4Z No Device
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09NN4ZZRelease Nasopharynx, Percutaneous Endoscopic Approach
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09NN7 Via Natural or Artificial Opening
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09NN7Z No Device
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09NN7ZZRelease Nasopharynx, Via Natural or Artificial Opening
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09NN8 Via Natural or Artificial Opening Endoscopic
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09NN8Z No Device
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09NN8ZZRelease Nasopharynx, Via Natural or Artificial Opening Endoscopic
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09NNX External
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09NNXZ No Device
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