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    v1.0.30
    OpenPayerBilling CodesOther Specialized Ophthalmological Services and ProceduresCPT cpt-92273-electrophysiologic-test-retinal-function-erg
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    CPT 92273: Electrophysiologic Test of Retinal Function

    Medicare pays $86 on average nationally for this procedure.

    CPT code 92273 describes an electrophysiologic test of retinal function—commonly called full‑field or Ganzfeld electroretinography (ffERG) or flash/focal electroretinography (fERG)—used to assess generalized or outer retinal function; this is a diagnostic ophthalmic procedure typically performed by eye care specialists in an outpatient clinic, specialty ophthalmology center, or hospital outpatient department to evaluate retinal response to light stimuli.

    For related coverage guidance, see recent payer policy updates: Corneal Remodeling for Refractive Errors and Corneal Grafting and Transplantation, Glaucoma Agents iDose TR (travoprost intracameral implant), Topical Treatments for Dry Eye Disease.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 45-year-old patient with progressive nyctalopia and decreased peripheral vision is referred to a retinal specialist for electrophysiologic testing. The eye care team schedules a full-field electroretinogram to assess generalized outer retinal function and to differentiate rod-cone dystrophy from optic nerve or cortical causes. On the day of service the patient arrives at an outpatient ophthalmology clinic or ambulatory surgical center. After informed consent, pupils are dilated, corneal electrodes or contact lens electrodes are placed following topical anesthesia, and standardized Ganzfeld flash stimuli are delivered. Responses are recorded, amplified, and interpreted by the physician to guide diagnosis (for example, retinitis pigmentosa, cone-rod dystrophy, toxic retinopathy) and to inform genetic testing, treatment planning, or counseling. Billing uses 92273 for the electrophysiologic test of retinal function (full-field or flash/focal ERG). Typical sites of service include outpatient ophthalmology offices, hospital outpatient departments, and ambulatory surgical centers. Patient flow includes pretest screening for contraindications, electrode placement, recording (generally 20–60 minutes), electrode removal, and documentation of technical parameters and physician interpretation.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    92083Visual field examination, extended (e.g., Goldmann, automated threshold), suprathreshold and threshold per eyeVisual field testing often complements ERG when assessing peripheral visual loss
    92250Fundus photography with interpretation and reportRetinal imaging documents structural changes that correlate with functional ERG findings
    92225Fluorescein angiography (diagnostic) with interpretation and reportAngiography may be performed when vascular or inflammatory causes are suspected
    76514Ophthalmic ultrasound, B-scan and quantitative A-scan when performed; unilateralB-scan can be used when media opacity prevents adequate retinal assessment
    92285External ocular photography with interpretation and report, extendedClinical imaging used in conjunction with ERG for documentation and monitoring

    Related Modifiers

    6 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207W00000X
    207K00000X
    208800000X
    156FX1101X
    235Z00000X
    251C00000X
    2084N0008X
    207WX0107X

    Related ICD-10-CM Codes

    17 rows

    ICD-10-CM CodeDescription
    G45.9Transient cerebral ischemic attack, unspecified
    H35.00Unspecified background retinopathy
    H35.071Retinal telangiectasis, right eye
    H35.079Retinal telangiectasis, unspecified eye
    H35.30Unspecified macular degeneration
    H35.33Angioid streaks of macula
    H35.52Pigmentary retinal dystrophy
    H35.54Dystrophies primarily involving the retinal pigment epithelium
    H35.60Retinal hemorrhage, unspecified eye
    H35.63Retinal hemorrhage, bilateral

    Showing 1–10 of 17

    Related Payer Policy Updates

    Specialty: Ophthalmology/Optometry1 / 2

    10 rows

    PolicyPayerEffective Date
    Corneal Remodeling for Refractive Errors and Corneal Grafting and TransplantationHealth-New-England2027-02-01
    Glaucoma Agents iDose TR (travoprost intracameral implant)Mass General Brigham Health Plan2027-01-04
    Topical Treatments for Dry Eye Diseaseblue cross blue shield - louisiana2027-01-01
    Corneal Collagen Cross-LinkingMass General Brigham Health Plan2026-11-01
    Intraocular Lens ImplantCigna2026-11-01
    VizzCigna2026-11-01
    Travoprost Intracameral ImplantBluecross Idaho2026-11-01
    Ophthalmology - Pilocarpine 1.25%Cigna2026-10-15
    Intravitreal and PunctumBlue Cross Blue Shield - Rhode Island2026-10-01
    Cataract Removal Surgery for AdultsAnthem2026-10-01

    Related Codes

    CPT-92265-EXTRAOCULAR-MUSCLE-ELECTROMYOGRAPHY

    CPT 92265: Electromyography of Extraocular Muscles

    CPT-92270-ELECTRO-OCULOGRAPHY-INTERPRETATION-REPORT

    CPT 92270: Electro-oculography with Interpretation and Report

    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: Color Vision Testing with Anomaloscope

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

    CPT 92284: Dark Adaptation Test of Retinal Photoreceptor Function

    CPT-92285-OCULAR-PHOTOGRAPHY-DOCUMENTATION

    CPT 92285: Photography of Abnormalities for Documentation

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

    CPT 92286: Fluorescein Angiography, Anterior Segment

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

    CPT 92287: Iris Vasculature Angiography

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

    CPT 92288: Dark Adaptation Screening for Rod Function

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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