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CPT 92265: Electromyography of Extraocular Muscles

CPT code 92265 identifies an ocular electromyography procedure in which electrophysiologic testing is performed on the extraocular muscles, with interpretation and reporting included. This specialized diagnostic test is used in evaluating neuromuscular disorders affecting eye movement and can inform surgical planning or neurologic diagnosis. Nationally, the code represents a niche but clinically important service within ophthalmology and neuro-ophthalmology practices.

Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication offers readers a concise briefing on clinical context, coding considerations, and payer coverage patterns where available. It summarizes what to expect for site-of-service delivery, typical clinical indications, and how the bundled interpretation/report component affects billing.

Readers will learn: the clinical purpose of the test, typical sites of service, which major payers are considered in coverage discussions, and where data are not available in the input. Benchmark details, payer-specific policy language, and claims-level trends are noted as Data not available in the input when not provided. The summary is intended for national audiences involved in coding, clinical operations, and revenue cycle oversight.

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Billing Code Overview

CPT code 92265 describes an electrophysiologic test analogous to extremity electromyography but performed on the extraocular muscles of the eye. The procedure includes the provider's interpretation and report, which are integral to the service and must not be billed separately.

Service type: Diagnostic electrophysiology of extraocular muscles (ocular electromyography)

Typical site of service: Ophthalmology clinic, neuro-ophthalmology clinic, or hospital outpatient department

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CPT 92265: Electromyography of Extraocular Muscles

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Sign up for cpt 92265 policy alerts

Get alerted when payer policies referencing 92265 are released or updated.

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Billing Code Overview

Service type: Diagnostic electrophysiology of extraocular muscles (ocular electromyography)

Typical site of service: Ophthalmology clinic, neuro-ophthalmology clinic, or hospital outpatient department

Clinical & Coding Specifications

Clinical Context

A 45-year-old patient presents to a neuro-ophthalmology clinic with binocular diplopia and intermittent ptosis. History and clinical exam suggest a cranial nerve palsy or neuromuscular junction disorder affecting extraocular muscles. After history, ocular motility testing, and bedside fatigability assessment, the provider schedules an extraocular muscle electromyography study to evaluate muscle and neuromuscular transmission function.

The procedure is performed in an outpatient eye clinic or neurology electrodiagnostic lab. The patient is positioned supine or seated, topical anesthesia applied as needed, and a specialized needle electrode is inserted into one or more extraocular muscles under the provider’s direct visualization or fluoroscopic/ultrasound guidance when indicated. The provider records spontaneous activity, voluntary motor unit potentials, and response to repetitive stimulation if testing for neuromuscular junction disorders. Interpretation and a written report are completed by the performing provider. Typical workflow includes pre-procedure consent, sterile technique, targeted muscle testing, data capture, interpretation, and documentation in the medical record. Typical site of service: outpatient ophthalmology or neurology clinic, ambulatory surgical center, or hospital outpatient department.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the physician’s interpretation/report if the technical component is billed separately.
`TC`	Technical component	Use when billing only facility/equipment/technician portion and physician interpretation is billed separately.
`52`	Reduced services	Use when the procedure is partially reduced or not completed but still reportable.
`53`	Discontinued procedure	Use when the procedure is started but terminated for patient-related or medical reasons.
`76`*	Repeat procedure by same physician	Not in provided list — Data not available in the input.
`78`	Unplanned return to operating/procedure room by same physician following initial procedure	Use if a return procedure related to complications occurs (rare for this test).
`59`*	Distinct procedural service	Not in provided list — Data not available in the input.
`22`	Increased procedural services	Use when work or time is substantially greater than typical for the procedure.
`23`	Unusual anesthesia	Use when general anesthesia is medically necessary for the diagnostic study.
`52`	Reduced services	(Duplicate entry avoided) Use when the service is partially reduced.
`53`	Discontinued procedure	(Duplicate entry avoided) Use when procedure is aborted.
`62`	Two surgeons	Use when two qualified surgeons share the primary responsibility for the procedure.
`80`	Assistant surgeon	Use when an assistant surgeon is required and documented.
`91`*	Repeat clinical diagnostic laboratory test	Not in provided list — Data not available in the input.

Taxonomy Code	Specialty	Notes
207T00000X	Ophthalmology	Ophthalmologists with neuro-ophthalmology expertise commonly perform or interpret extraocular EMG.
207L00000X	Neurology	Neurologists, especially neurophysiologists, perform electrodiagnostic testing of extraocular muscles.
2084P0812X	Physical Medicine & Rehabilitation	PM&R physicians with electrodiagnostic expertise may perform testing for neuromuscular disorders affecting ocular muscles.
363L00000X	Neuro-ophthalmology	Subspecialists in neuro-ophthalmology interpret complex ocular motility EMG studies.

*Notes: Only modifiers supplied in the input were eligible for selection. Several commonly used CMS modifiers relevant to diagnostic testing (e.g., 59, 76, 91) were not listed among provided modifiers; where absent, indicate data not available in the input.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`G70.00`	Myasthenia gravis without (acute) exacerbation	Extraocular EMG and single-fiber testing assess neuromuscular junction dysfunction causing diplopia and ptosis.
`G52.2`	Oculomotor nerve palsy	EMG of extraocular muscles helps evaluate denervation or reinnervation patterns in cranial nerve III palsy.
`H49.20`	Sixth (abducent) nerve palsy, unspecified eye	EMG can assess lateral rectus muscle involvement and guide prognosis.
`H02.401`	Ptosis, unspecified eyelid	When ptosis is suspected to have a neuromuscular cause, extraocular/eyelid muscle EMG may be used diagnostically.
`G52.1`	Trochlear nerve palsy	Superior oblique muscle dysfunction evaluation may include targeted EMG.
`H53.2`	Diplopia	Symptom code often linked to EMG studies to determine neuromuscular vs. mechanical causes.

If no ICD-10 codes were provided in the input, the list above represents common, clinically standard diagnoses associated with extraocular muscle electromyography.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`92265`	Electromyography of extraocular muscles; interpretation and report included	Primary code for needle EMG testing of extraocular muscles; includes interpretation and report.
`95905`	Neuromuscular junction testing; single-fiber electromyography (SFEMG)	Performed when detailed assessment of neuromuscular junction transmission is needed; often adjunctive to extraocular EMG for suspected myasthenia gravis.
`95886`	Needle electromyography; cranial nerve supplied muscles (excluding tongue)	Alternative code sometimes used for EMG of cranial-nerve-innervated facial or ocular muscles when specified; relationship is overlapping scope with `92265` depending on payer guidance.
`92507`	Acoustic immittance testing (tympanometry)	Data not directly related — Data not available in the input.
`93798`*	Other cardiovascular procedures	Data not related — Data not available in the input.

*If any listed CPT codes beyond 92265 are not applicable for a payer, follow payer-specific billing guidance. If no related CPT codes were provided in the input, commonly associated electrodiagnostic and neurology procedure codes are listed above based on clinical workflow.

CPT 92270: Electro-oculography with Interpretation and Report

CPT-92273-ELECTROPHYSIOLOGIC-TEST-RETINAL-FUNCTION-ERG

CPT 92273: Electrophysiologic Test of Retinal Function

CPT-92274-MULTIFOCAL-ELECTRORETINOGRAPHY-MFERG-RETINAL-FUNCTION

CPT 92274: Multifocal Electroretinography (mfERG) for Retinal Function

CPT-92283-ANOMALOSCOPE-COLOR-VISION-TESTING-RED-GREEN

CPT 92283: Anomaloscope Color Vision Testing

CPT-92284-RETINAL-PHOTORECEPTOR-FUNCTION-TESTING-DARK-ADAPTATION

CPT 92284: Retinal Photoreceptor Function Testing and Dark Adaptation

CPT-92285-OCULAR-PHOTOGRAPHY-DOCUMENTATION

CPT 92285: Photography of Ocular Abnormalities for Documentation

CPT-92286-ANTERIOR-SEGMENT-OCULAR-VASCULAR-EXAMINATION-INTERPRETATION

CPT 92286: Anterior Segment Ocular Vascular Examination with Interpretation

CPT-92287-IRIS-VASCULAR-IMAGING-NEOVASCULARIZATION-EVALUATION

CPT 92287: Iris Vascular Imaging for Neovascularization

CPT-92288-ROD-FUNCTION-DARK-ADAPTATION-SCREENING

CPT 92288: Dark Adaptation/Rod Function Screening Test

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the physician’s interpretation/report if the technical component is billed separately.
`TC`	Technical component	Use when billing only facility/equipment/technician portion and physician interpretation is billed separately.
`52`	Reduced services	Use when the procedure is partially reduced or not completed but still reportable.
`53`	Discontinued procedure	Use when the procedure is started but terminated for patient-related or medical reasons.
`76`*	Repeat procedure by same physician	Not in provided list — Data not available in the input.
`78`	Unplanned return to operating/procedure room by same physician following initial procedure	Use if a return procedure related to complications occurs (rare for this test).
`59`*	Distinct procedural service	Not in provided list — Data not available in the input.
`22`	Increased procedural services	Use when work or time is substantially greater than typical for the procedure.
`23`	Unusual anesthesia	Use when general anesthesia is medically necessary for the diagnostic study.
`52`	Reduced services	(Duplicate entry avoided) Use when the service is partially reduced.
`53`	Discontinued procedure	(Duplicate entry avoided) Use when procedure is aborted.
`62`	Two surgeons	Use when two qualified surgeons share the primary responsibility for the procedure.
`80`	Assistant surgeon	Use when an assistant surgeon is required and documented.
`91`*	Repeat clinical diagnostic laboratory test	Not in provided list — Data not available in the input.

Taxonomy Code	Specialty	Notes
207T00000X	Ophthalmology	Ophthalmologists with neuro-ophthalmology expertise commonly perform or interpret extraocular EMG.
207L00000X	Neurology	Neurologists, especially neurophysiologists, perform electrodiagnostic testing of extraocular muscles.
2084P0812X	Physical Medicine & Rehabilitation	PM&R physicians with electrodiagnostic expertise may perform testing for neuromuscular disorders affecting ocular muscles.
363L00000X	Neuro-ophthalmology	Subspecialists in neuro-ophthalmology interpret complex ocular motility EMG studies.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`G70.00`	Myasthenia gravis without (acute) exacerbation	Extraocular EMG and single-fiber testing assess neuromuscular junction dysfunction causing diplopia and ptosis.
`G52.2`	Oculomotor nerve palsy	EMG of extraocular muscles helps evaluate denervation or reinnervation patterns in cranial nerve III palsy.
`H49.20`	Sixth (abducent) nerve palsy, unspecified eye	EMG can assess lateral rectus muscle involvement and guide prognosis.
`H02.401`	Ptosis, unspecified eyelid	When ptosis is suspected to have a neuromuscular cause, extraocular/eyelid muscle EMG may be used diagnostically.
`G52.1`	Trochlear nerve palsy	Superior oblique muscle dysfunction evaluation may include targeted EMG.
`H53.2`	Diplopia	Symptom code often linked to EMG studies to determine neuromuscular vs. mechanical causes.

If no ICD-10 codes were provided in the input, the list above represents common, clinically standard diagnoses associated with extraocular muscle electromyography.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`92265`	Electromyography of extraocular muscles; interpretation and report included	Primary code for needle EMG testing of extraocular muscles; includes interpretation and report.
`95905`	Neuromuscular junction testing; single-fiber electromyography (SFEMG)	Performed when detailed assessment of neuromuscular junction transmission is needed; often adjunctive to extraocular EMG for suspected myasthenia gravis.
`95886`	Needle electromyography; cranial nerve supplied muscles (excluding tongue)	Alternative code sometimes used for EMG of cranial-nerve-innervated facial or ocular muscles when specified; relationship is overlapping scope with `92265` depending on payer guidance.
`92507`	Acoustic immittance testing (tympanometry)	Data not directly related — Data not available in the input.
`93798`*	Other cardiovascular procedures	Data not related — Data not available in the input.

CPT 92270: Electro-oculography with Interpretation and Report

CPT-92273-ELECTROPHYSIOLOGIC-TEST-RETINAL-FUNCTION-ERG

CPT 92273: Electrophysiologic Test of Retinal Function

CPT-92274-MULTIFOCAL-ELECTRORETINOGRAPHY-MFERG-RETINAL-FUNCTION

CPT 92274: Multifocal Electroretinography (mfERG) for Retinal Function

CPT-92283-ANOMALOSCOPE-COLOR-VISION-TESTING-RED-GREEN

CPT 92283: Anomaloscope Color Vision Testing

CPT-92284-RETINAL-PHOTORECEPTOR-FUNCTION-TESTING-DARK-ADAPTATION

CPT 92284: Retinal Photoreceptor Function Testing and Dark Adaptation

CPT-92285-OCULAR-PHOTOGRAPHY-DOCUMENTATION

CPT 92285: Photography of Ocular Abnormalities for Documentation

CPT-92286-ANTERIOR-SEGMENT-OCULAR-VASCULAR-EXAMINATION-INTERPRETATION

CPT 92286: Anterior Segment Ocular Vascular Examination with Interpretation

CPT-92287-IRIS-VASCULAR-IMAGING-NEOVASCULARIZATION-EVALUATION

CPT 92287: Iris Vascular Imaging for Neovascularization

CPT-92288-ROD-FUNCTION-DARK-ADAPTATION-SCREENING

CPT 92288: Dark Adaptation/Rod Function Screening Test

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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CPT 92265: Electromyography of Extraocular Muscles

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Billing Code Overview

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CPT 92265: Electromyography of Extraocular Muscles

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References