decisionhealth Newsletters, Answer Books - 2009 Issue 2 (February)
Neurology and Neurosurgery / Evoked potentials (EPs)
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Article Overview
This article covers evoked potential testing in neurology and neurosurgery, including how the different sensory modalities are organized and where the associated CPT codes fit in the manual. It discusses broad coding considerations for somatosensory, visual, auditory, and intraoperative testing, along with coverage of comprehensive and limited auditory brainstem evaluations. It is aimed at coders, billing staff, and clinicians who work with electrophysiology and neurodiagnostic services.
Why This Topic Matters
Evoked potential services are commonly used in neurologic and surgical settings, and accurate code selection depends on understanding the type of study performed and the scope of the exam. The article helps readers identify the relevant code families and the general boundaries between study types.
Article Sections
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Overview of evoked potential testing
Introduces evoked potential testing and the major sensory modalities discussed in the article. Provides a general framing for the related neurophysiology services.
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Somatosensory evoked potentials
Covers somatosensory response testing, how the studies are performed, and the broad clinical settings in which they are used. Also notes general coding considerations for these services.
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Upper and lower limb SEP studies
Describes how somatosensory evoked potential studies are organized by limb region and how they are reported at a high level. Addresses the broader study structure without giving selection rules.
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Blink reflex study
Summarizes the blink reflex as an electrophysiologic study and the general neurologic regions it is used to evaluate. Also mentions the type of reporting elements included in the study description.
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Intraoperative evoked potential testing
Notes the intraoperative context for evoked potential testing and the related coding topic covered in the article. Focuses on the procedural setting rather than specific coding instructions.
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Visual evoked potentials
Discusses visual evoked response testing and the general way these studies are stimulated and recorded. Includes the broad clinical situations in which the service is used.
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Auditory brainstem evoked response recording
Introduces auditory brainstem evoked response testing and its role in evaluating the central auditory pathways. Provides background on the broader CPT area used for these studies.
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Comprehensive auditory evoked response exam
Describes the comprehensive auditory evoked response examination at a general level, including the broader components of the study. Explains the types of auditory pathways assessed without disclosing coding decisions.
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Limited audiometry examination
Covers the limited auditory brainstem response screening exam and its general use in infant screening settings. Summarizes the article’s discussion of this narrower auditory testing category.
What You Will Learn
- How evoked potential testing is organized by sensory modality
- The general scope of somatosensory, visual, and auditory evoked response studies
- How evoked potential services are discussed in relation to neurology and neurosurgery coding
- The distinction between comprehensive and limited auditory testing at a broad level
- The kinds of neurophysiologic studies referenced in the article
Who Should Read This
- Medical coders
- Billing staff
- Neurodiagnostic technicians
- Neurologists
- Neurosurgery practice staff
Codes Discussed
Code Ranges Discussed
Modifiers Discussed
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