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| 09N00ZZ | Release Right External Ear, Open Approach |
| 09N03ZZ | Release Right External Ear, Percutaneous Approach |
| 09N04ZZ | Release Right External Ear, Percutaneous Endoscopic Approach |
| 09N0XZZ | Release Right External Ear, External Approach |
| 09N10ZZ | Release Left External Ear, Open Approach |
| 09N13ZZ | Release Left External Ear, Percutaneous Approach |
| 09N14ZZ | Release Left External Ear, Percutaneous Endoscopic Approach |
| 09N1XZZ | Release Left External Ear, External Approach |
| 09N30ZZ | Release Right External Auditory Canal, Open Approach |
| 09N33ZZ | Release Right External Auditory Canal, Percutaneous Approach |
| 09N34ZZ | Release Right External Auditory Canal, Percutaneous Endoscopic Approach |
| 09N37ZZ | Release Right External Auditory Canal, Via Natural or Artificial Opening |
| 09N38ZZ | Release Right External Auditory Canal, Via Natural or Artificial Opening Endoscopic |
| 09N3XZZ | Release Right External Auditory Canal, External Approach |
| 09N40ZZ | Release Left External Auditory Canal, Open Approach |
| 09N43ZZ | Release Left External Auditory Canal, Percutaneous Approach |
| 09N44ZZ | Release Left External Auditory Canal, Percutaneous Endoscopic Approach |
| 09N47ZZ | Release Left External Auditory Canal, Via Natural or Artificial Opening |
| 09N48ZZ | Release Left External Auditory Canal, Via Natural or Artificial Opening Endoscopic |
| 09N4XZZ | Release Left External Auditory Canal, External Approach |
| 09N50ZZ | Release Right Middle Ear, Open Approach |
| 09N58ZZ | Release Right Middle Ear, Via Natural or Artificial Opening Endoscopic |
| 09N60ZZ | Release Left Middle Ear, Open Approach |
| 09N68ZZ | Release Left Middle Ear, Via Natural or Artificial Opening Endoscopic |
| 09N70ZZ | Release Right Tympanic Membrane, Open Approach |
| 09N73ZZ | Release Right Tympanic Membrane, Percutaneous Approach |
| 09N74ZZ | Release Right Tympanic Membrane, Percutaneous Endoscopic Approach |
| 09N77ZZ | Release Right Tympanic Membrane, Via Natural or Artificial Opening |
| 09N78ZZ | Release Right Tympanic Membrane, Via Natural or Artificial Opening Endoscopic |
| 09N80ZZ | Release Left Tympanic Membrane, Open Approach |
| 09N83ZZ | Release Left Tympanic Membrane, Percutaneous Approach |
| 09N84ZZ | Release Left Tympanic Membrane, Percutaneous Endoscopic Approach |
| 09N87ZZ | Release Left Tympanic Membrane, Via Natural or Artificial Opening |
| 09N88ZZ | Release Left Tympanic Membrane, Via Natural or Artificial Opening Endoscopic |
| 09N90ZZ | Release Right Auditory Ossicle, Open Approach |
| 09N98ZZ | Release Right Auditory Ossicle, Via Natural or Artificial Opening Endoscopic |
| 09NA0ZZ | Release Left Auditory Ossicle, Open Approach |
| 09NA8ZZ | Release Left Auditory Ossicle, Via Natural or Artificial Opening Endoscopic |
| 09NB0ZZ | Release Right Mastoid Sinus, Open Approach |
| 09NB3ZZ | Release Right Mastoid Sinus, Percutaneous Approach |
| 09NB4ZZ | Release Right Mastoid Sinus, Percutaneous Endoscopic Approach |
| 09NB8ZZ | Release Right Mastoid Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NC0ZZ | Release Left Mastoid Sinus, Open Approach |
| 09NC3ZZ | Release Left Mastoid Sinus, Percutaneous Approach |
| 09NC4ZZ | Release Left Mastoid Sinus, Percutaneous Endoscopic Approach |
| 09NC8ZZ | Release Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic |
| 09ND0ZZ | Release Right Inner Ear, Open Approach |
| 09ND8ZZ | Release Right Inner Ear, Via Natural or Artificial Opening Endoscopic |
| 09NE0ZZ | Release Left Inner Ear, Open Approach |
| 09NE8ZZ | Release Left Inner Ear, Via Natural or Artificial Opening Endoscopic |
| 09NF0ZZ | Release Right Eustachian Tube, Open Approach |
| 09NF3ZZ | Release Right Eustachian Tube, Percutaneous Approach |
| 09NF4ZZ | Release Right Eustachian Tube, Percutaneous Endoscopic Approach |
| 09NF7ZZ | Release Right Eustachian Tube, Via Natural or Artificial Opening |
| 09NF8ZZ | Release Right Eustachian Tube, Via Natural or Artificial Opening Endoscopic |
| 09NG0ZZ | Release Left Eustachian Tube, Open Approach |
| 09NG3ZZ | Release Left Eustachian Tube, Percutaneous Approach |
| 09NG4ZZ | Release Left Eustachian Tube, Percutaneous Endoscopic Approach |
| 09NG7ZZ | Release Left Eustachian Tube, Via Natural or Artificial Opening |
| 09NG8ZZ | Release Left Eustachian Tube, Via Natural or Artificial Opening Endoscopic |
| 09NK0ZZ | Release Nasal Mucosa and Soft Tissue, Open Approach |
| 09NK3ZZ | Release Nasal Mucosa and Soft Tissue, Percutaneous Approach |
| 09NK4ZZ | Release Nasal Mucosa and Soft Tissue, Percutaneous Endoscopic Approach |
| 09NK8ZZ | Release Nasal Mucosa and Soft Tissue, Via Natural or Artificial Opening Endoscopic |
| 09NKXZZ | Release Nasal Mucosa and Soft Tissue, External Approach |
| 09NL0ZZ | Release Nasal Turbinate, Open Approach |
| 09NL3ZZ | Release Nasal Turbinate, Percutaneous Approach |
| 09NL4ZZ | Release Nasal Turbinate, Percutaneous Endoscopic Approach |
| 09NL7ZZ | Release Nasal Turbinate, Via Natural or Artificial Opening |
| 09NL8ZZ | Release Nasal Turbinate, Via Natural or Artificial Opening Endoscopic |
| 09NM0ZZ | Release Nasal Septum, Open Approach |
| 09NM3ZZ | Release Nasal Septum, Percutaneous Approach |
| 09NM4ZZ | Release Nasal Septum, Percutaneous Endoscopic Approach |
| 09NM8ZZ | Release Nasal Septum, Via Natural or Artificial Opening Endoscopic |
| 09NN0ZZ | Release Nasopharynx, Open Approach |
| 09NN3ZZ | Release Nasopharynx, Percutaneous Approach |
| 09NN4ZZ | Release Nasopharynx, Percutaneous Endoscopic Approach |
| 09NN7ZZ | Release Nasopharynx, Via Natural or Artificial Opening |
| 09NN8ZZ | Release Nasopharynx, Via Natural or Artificial Opening Endoscopic |
| 09NP0ZZ | Release Accessory Sinus, Open Approach |
| 09NP3ZZ | Release Accessory Sinus, Percutaneous Approach |
| 09NP4ZZ | Release Accessory Sinus, Percutaneous Endoscopic Approach |
| 09NP8ZZ | Release Accessory Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NQ0ZZ | Release Right Maxillary Sinus, Open Approach |
| 09NQ3ZZ | Release Right Maxillary Sinus, Percutaneous Approach |
| 09NQ4ZZ | Release Right Maxillary Sinus, Percutaneous Endoscopic Approach |
| 09NQ8ZZ | Release Right Maxillary Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NR0ZZ | Release Left Maxillary Sinus, Open Approach |
| 09NR3ZZ | Release Left Maxillary Sinus, Percutaneous Approach |
| 09NR4ZZ | Release Left Maxillary Sinus, Percutaneous Endoscopic Approach |
| 09NR8ZZ | Release Left Maxillary Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NS0ZZ | Release Right Frontal Sinus, Open Approach |
| 09NS3ZZ | Release Right Frontal Sinus, Percutaneous Approach |
| 09NS4ZZ | Release Right Frontal Sinus, Percutaneous Endoscopic Approach |
| 09NS8ZZ | Release Right Frontal Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NT0ZZ | Release Left Frontal Sinus, Open Approach |
| 09NT3ZZ | Release Left Frontal Sinus, Percutaneous Approach |
| 09NT4ZZ | Release Left Frontal Sinus, Percutaneous Endoscopic Approach |
| 09NT8ZZ | Release Left Frontal Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NU0ZZ | Release Right Ethmoid Sinus, Open Approach |
| 09NU3ZZ | Release Right Ethmoid Sinus, Percutaneous Approach |
| 09NU4ZZ | Release Right Ethmoid Sinus, Percutaneous Endoscopic Approach |
| 09NU8ZZ | Release Right Ethmoid Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NV0ZZ | Release Left Ethmoid Sinus, Open Approach |
| 09NV3ZZ | Release Left Ethmoid Sinus, Percutaneous Approach |
| 09NV4ZZ | Release Left Ethmoid Sinus, Percutaneous Endoscopic Approach |
| 09NV8ZZ | Release Left Ethmoid Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NW0ZZ | Release Right Sphenoid Sinus, Open Approach |
| 09NW3ZZ | Release Right Sphenoid Sinus, Percutaneous Approach |
| 09NW4ZZ | Release Right Sphenoid Sinus, Percutaneous Endoscopic Approach |
| 09NW8ZZ | Release Right Sphenoid Sinus, Via Natural or Artificial Opening Endoscopic |
| 09NX0ZZ | Release Left Sphenoid Sinus, Open Approach |
| 09NX3ZZ | Release Left Sphenoid Sinus, Percutaneous Approach |
| 09NX4ZZ | Release Left Sphenoid Sinus, Percutaneous Endoscopic Approach |
| 09NX8ZZ | Release Left Sphenoid Sinus, Via Natural or Artificial Opening Endoscopic |