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0B21 Trachea
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0B21X External
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0B21X0 Drainage Device
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0B21X0ZChange Drainage Device in Trachea, External Approach
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0B21XE Intraluminal Device, Endotracheal Airway
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0B21XEZChange Endotracheal Airway in Trachea, External Approach
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0B21XF Tracheostomy Device
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0B21XFZChange Tracheostomy Device in Trachea, External Approach
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0B21XY Other Device
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0B21XYZChange Other Device in Trachea, External Approach
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