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099C Mastoid Sinus, Left
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099C0 Open
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099C3 Percutaneous
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099C4 Percutaneous Endoscopic
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099C7 Via Natural or Artificial Opening
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099C8 Via Natural or Artificial Opening Endoscopic
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099C80 Drainage Device
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099C80ZDrainage of Left Mastoid Sinus with Drainage Device, Via Natural or Artificial Opening Endoscopic
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099C8Z No Device
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099CX External
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099CX0 Drainage Device
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099CXZ No Device
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