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    v1.0.28
    OpenPayerBilling CodesIntravascular Imaging of Extracranial and Intracranial Cerebral VesselsCPT cpt-0984t-extracranial-cerebral-vessel-oct-imaging
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    CPT 0984T: Extracranial Cerebral Vessel Optical Coherence Tomography

    CPT code 0984T describes imaging of an extracranial cerebral blood vessel using optical coherence tomography (OCT), performed with radiological supervision, interpretation, and reporting; this add-on code applies to the first extracranial vessel imaged and is typically used during endovascular or vascular diagnostic procedures (service type: vascular imaging/diagnostic OCT) performed in an outpatient interventional radiology suite or hospital catheterization lab (typical site of service: outpatient imaging center, ambulatory surgery center, or hospital-based interventional suite).

    For related coverage guidance, see recent payer policy updates: Artificial Cervical Intervertebral Disc, Lumbar Microdiscectomy, Lumbar Decompression.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 64-year-old patient with a history of transient ischemic attacks and carotid artery stenosis is referred for intravascular imaging to further evaluate an extracranial cerebral vessel prior to endovascular intervention. The patient presents to an outpatient interventional neuroradiology or neurointerventional suite after noninvasive imaging (carotid duplex ultrasound, CTA or MRA) demonstrates vessel irregularity or suspected plaque morphology requiring higher-resolution assessment. The workflow includes informed consent, vascular access (commonly femoral or radial), catheter navigation to the target extracranial cerebral vessel, and acquisition of optical coherence tomography (OCT) images. The provider performs real-time image acquisition, applies radiological supervision and interpretation, documents findings in a formal report, and archives imaging. The add-on code 0984T is reported for the first extracranial cerebral vessel imaged with OCT when performed as part of diagnostic evaluation or to guide therapeutic decision-making such as angioplasty, stenting, or plaque characterization. Typical sites of service are hospital outpatient departments, ambulatory surgical centers, and specialized endovascular suites. Common payors for billing follow standard commercial and government plans such as Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    0374TIntracranial OCT imaging, optical coherence tomography; first vessel imagedApplied when OCT imaging is performed for intracranial rather than extracranial vessels; related modality code for intracranial applications.
    36221Selective catheter placement, internal carotid artery, unilateral, radiological supervision and interpretationOften performed before or concurrent with OCT imaging to access extracranial cerebral vessels for diagnostic contrast injection and catheter placement.
    77012CT guidance for vascular interventions (diagnostic/therapeutic)May be used in hybrid procedures where cross-sectional guidance complements OCT imaging.
    92928Percutaneous transluminal stent placement, coronary or non-coronary vessel (example for peripheral intracranial stenting)Represents endovascular therapeutic procedures that OCT imaging may guide; billing relationship depends on clinical context and bundling rules.
    88360Immunohistochemistry (if applicable)Ancillary pathology code; rarely related but included when concurrent tissue analysis is performed in hybrid cases.

    Related Modifiers

    9 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…
    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…
    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…
    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…
    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…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207RH0000XHematology (Internal Medicine) PhysicianAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, cl…
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    207K00000XAllergy & Immunology PhysicianAn allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Select…
    242T00000XPerfusionistA perfusionist operates extracorporeal circulation and autotransfusion equipment during any medical situation where it is necessary to support or temp…
    208G00000XThoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianA thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the su…
    175M00000XLay MidwifeA person qualified by experience and limited specialized training to provide obstetric and neo-natal care in the management of women having normal pre…
    261QC1800XCorporate Health Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    225XF0002XFeeding, Eating & Swallowing Occupational TherapistOccupational therapists provide interventions to clients of all ages with feeding, eating and swallowing difficulties. Occupational therapists provid…

    Related Payer Policy Updates

    Specialty: Neurology/Neurosurgery1 / 3

    7 rows

    PolicyPayerEffective Date
    Artificial Cervical Intervertebral Discuniverahealthcare2026-10-15
    Lumbar Microdiscectomyuniverahealthcare2026-10-15
    Lumbar Decompressionuniverahealthcare2026-10-15
    Nerve Fiber Density Testing (IENFD/ENFD) Coverage CriteriaOscar Health2026-10-01
    Biomarker Testing for Multiple Sclerosis and Related Neurologic DiseasesOscar Health2026-10-01
    Biochemical Markers of Alzheimer Disease and DementiaOscar Health2026-10-01
    Serum Testing For Evidence of Mild Traumatic Brain InjuryOscar Health2026-10-01

    Related Codes

    CPT-0985T-EXTRACRANIAL-VESSEL-OPTICAL-COHERENCE-TOMOGRAPHY-ADD-ON

    CPT 0985T: Extracranial Cerebral Vessel OCT Imaging (Add-On)

    CPT-0986T-INTRACRANIAL-OPTICAL-COHERENCE-TOMOGRAPHY

    CPT 0986T: Intracranial Optical Coherence Tomography (OCT) Imaging

    CPT-0987T-INTRACRANIAL-OPTICAL-COHERENCE-TOMOGRAPHY-OCT-ADD-ON

    CPT 0987T: Intracranial Optical Coherence Tomography, Additional Vessel

    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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