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099N Nasopharynx
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099N0 Open
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099N3 Percutaneous
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099N4 Percutaneous Endoscopic
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099N7 Via Natural or Artificial Opening
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099N8 Via Natural or Artificial Opening Endoscopic
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099N80 Drainage Device
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099N80ZDrainage of Nasopharynx with Drainage Device, Via Natural or Artificial Opening Endoscopic
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099N8Z No Device
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099NX External
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099NX0 Drainage Device
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099NXZ No Device
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