1 I63.9 is a billable ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. 2  Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes. 3  This is the American ICD-10-CM version of I63.9.
Sound localization refers to a listener's ability to identify the location or origin of a detected sound in direction and distance. It may also refer to the methods in acoustical engineering to simulate the placement of an auditory cue in a virtual 3D space (see binaural recording, wave field synthesis).
The goal of positional testing is first to detect positional nystagmus, and if there is positional nystagmus, to determine if it is due to the ear (usually BPPV), brain (central positional nystagmus), or neck (cervical nystagmus).