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2009 ICD-9-CM

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20.9 Other operations on inner and middle ear
20.91 Tympanosympathectomy
20.92 Revision of mastoidectomy
20.93 Repair of oval and round windows
Closure of fistula:
oval window
perilymph
round window
20.94 Injection of tympanum
20.95 Implantation of electromagnetic hearing device
Bone conduction hearing device
Excludes:
cochlear prosthetic device (20.96-20.98)
20.96 Implantation or replacement of cochlear prosthetic device, not otherwise specified
Implantation of receiver (within skull) and insertion of electrode(s) in the cochlea
Includes: mastoidectomy
Excludes:
electromagnetic hearing device (20.95)
20.97 Implantation or replacement of cochlear prosthetic device, single channel
Implantation of receiver (within skull) and insertion of electrode in the cochlea
Includes: mastoidectomy
Excludes:
electromagnetic hearing device (20.95)
20.98 Implantation or replacement of cochlear prosthetic device, multiple channel
Implantation of receiver (within skull) and insertion of electrodes in the cochlea
Includes: mastoidectomy
Excludes:
electromagnetic hearing device (20.95)
20.99 Other operations on middle and inner ear
Attachment of percutaneous abutment (screw) for prosthetic device
Repair or removal of cochlear prosthetic device (receiver) (electrode)
Excludes:
adjustment (external components) of cochlear prosthetic device (95.49)
fitting of hearing aid (95.48)
 
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