AHA Coding Clinic® for ICD-9 - 1992 Fourth Quarter; New/Revised Codes

Excision of Acoustic Neuroma by Radiosurgery

Note: As of October 1, 1998, code 92.3 has been expanded to fourth digits to specify type of stereotactic radiosurgery. Note: As of October 1, 1995, stereotactic radiosurgery is coded to 92.3 with 93.59 for stereotactic head frame application. Acoustic neuromas (Schwannoma, acoustic neurinoma, neurilemoma, cerebellopontile angle tumor) are benign tumors of the acoustic nerve extending from the auditory canal with extension into the brain. They are derived from Schwann cells and account for approximately 10% of all intracranial tumors. The tumor affects the craniospinal nerve sheath, usually the 8th cranial nerve, but may also affect...

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