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    OpenPayerBilling CodesOptical Coherence Tomography (Ear)CPT cpt-0485t-middle-ear-optical-coherence-tomography
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    CPT 0485T: Middle Ear Optical Coherence Tomography, Unilateral

    CPT code 0485T describes the use of optical coherence tomography (OCT) of the middle ear, a noninvasive imaging service that produces high-resolution three-dimensional tissue images; the code is reported per side (right or left) and includes interpretation and report. Service type: diagnostic imaging (OCT). Typical site of service: ambulatory clinic or outpatient imaging facility where otologic diagnostic procedures are performed.

    For related coverage guidance, see recent payer policy updates: Navigated Transcranial Magnetic Stimulation for Preoperative Brain Mapping, Navigated Transcranial Magnetic Stimulation for Preoperative Brain Mapping, Navigated Transcranial Magnetic Stimulation for Preoperative Brain Mapping.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 42-year-old patient presents to an otolaryngology clinic with persistent unilateral ear fullness, hearing fluctuation, and intermittent otalgia following chronic otitis media and prior tympanostomy tube placement. The otologist performs an in‑office evaluation and determines that high‑resolution imaging of the middle ear microstructure is needed to assess tympanic membrane integrity, middle ear mucosa, and ossicular relationships. The provider obtains informed consent and uses an optical coherence tomography (OCT) device to image the affected ear (single side, right or left) in a noninvasive manner. The procedure is performed in an outpatient clinic procedure room or ambulatory surgery center depending on patient factors and facility setup. Images are acquired, processed into three‑dimensional views, interpreted by the provider, and a formal report is generated and documented in the medical record. The service is reported using 0485T for the single side imaged; interpretation and report are included in the code and are not reported separately. Typical workflow steps: pre-procedure history and focused ear exam, device setup and sterile field as needed, OCT image acquisition of the middle ear, immediate review and interpretation by the performing physician, documentation and image storage, and post-procedure counseling and follow-up planning.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    92567Tympanometry (impedance testing)Common adjunctive diagnostic test to assess middle ear pressure and compliance prior to OCT imaging.
    92551Pure tone audiometry (threshold testing)Hearing assessment performed before or after OCT to correlate structural findings with auditory function.
    69210Removal of impacted cerumen using instrumentationPerformed when ear canal obstruction must be cleared to permit OCT visualization of the tympanic membrane and middle ear.
    69210 is listed above to indicate cerumen removal; if cerumen removal is extensive and separately billable, document accordingly.
    69990Microscopic surgical techniques (application of operating microscope for procedures on the ear)Used when OCT is performed in conjunction with microscopic examination or operative procedures in the middle ear.
    69990 is often reported when microscope is integral to a billed operative service; verify payer rules about concurrent billing.
    69200Removal of foreign body from external ear canal; without instrumentationPerformed when foreign body removal is required before OCT imaging can be performed.
    99152Moderate sedation services (initial 15 minutes)Used when moderate sedation is provided to facilitate patient tolerance for OCT imaging in pediatric or anxious patients; report professional time accordingly.

    Related Modifiers

    10 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    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…
    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…
    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…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207RH0000X
    2080P0208X
    207L00000X
    261QF0400X
    207N00000X
    163WE0900X
    111NX0100X
    103TS0200X

    Related Payer Policy Updates

    Specialty: Neurology/Neurosurgery1 / 3

    10 rows

    PolicyPayerEffective Date
    Navigated Transcranial Magnetic Stimulation for Preoperative Brain Mappingpremerabluecrossofwashington2027-02-05
    Navigated Transcranial Magnetic Stimulation for Preoperative Brain Mappingpremerabluecrossofwashington2027-02-05
    Navigated Transcranial Magnetic Stimulation for Preoperative Brain Mappingpremerabluecrossofwashington2027-02-05
    Calcitonin Gene-Related Peptide (CGRP) Inhibitors: Vyepti (eptinezumab-jjmr)Mass General Brigham Health Plan2027-01-04
    Clinical Review Criteria Intraoperative Neurophysiological Monitoring (IONM)Kaiser Permanente2027-01-01
    Open Neuroplasty Lumbar PlexusCigna2026-12-15
    Laser Interstitial Thermal TherapyCigna2026-11-15
    Remote Electrical Neuromodulation for Migraines (i.e., Nerivio®)bcbsvermont2026-11-01
    Artificial Cervical Intervertebral Discuniverahealthcare2026-10-15
    Lumbar Microdiscectomyuniverahealthcare2026-10-15

    Related Codes

    CPT-0486T-MIDDLE-EAR-OCT-IMAGING-BILATERAL

    CPT 0486T: Middle Ear Optical Coherence Tomography, Bilateral

    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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