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Official Description

Optical coherence tomography (OCT) of middle ear, with interpretation and report; bilateral

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

Optical coherence tomography (OCT) is a sophisticated, non-invasive imaging technique that provides detailed microstructural and morphological insights into the middle ear. This procedure is particularly focused on critical components such as the tympanic membrane, which is located at the end of the external ear canal, and the ossicular chain, which includes the malleus, incus, and stapes bones. These ossicles play a vital role in conducting sound vibrations from the outer ear to the inner ear. By utilizing OCT, healthcare professionals can assess the middle ear for various conditions, including congenital anomalies, tumors, and traumatic injuries. The technology works by employing a probe that contains a split light beam, known as an interferometer. This setup consists of one beam serving as a reference and the other as a sampling beam. When the probe is positioned in the external ear canal, OCT captures and analyzes the intensity of light interference from both beams. This process allows for the generation of high-resolution two or three-dimensional cross-sectional images of the middle ear's tissues and bony structures. For coding purposes, the CPT® code 0485T is designated for unilateral OCT of the middle ear, while code 0486T is specifically used for bilateral OCT, which includes the interpretation of the findings and the generation of a comprehensive report.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

Optical coherence tomography (OCT) of the middle ear is indicated for various clinical scenarios where detailed imaging of the middle ear structures is necessary. The following conditions may warrant the use of this procedure:

  • Congenital Anomalies - OCT can help identify structural abnormalities present at birth that may affect hearing or middle ear function.
  • Tumors - The procedure is useful in detecting and evaluating the presence of tumors within the middle ear, providing critical information for diagnosis and treatment planning.
  • Injuries - OCT can assess damage to the middle ear structures resulting from trauma, aiding in the evaluation of the extent of injury and guiding management decisions.

2. Procedure

The procedure for performing optical coherence tomography (OCT) of the middle ear involves several key steps to ensure accurate imaging and assessment of the middle ear structures. The following outlines the procedural steps:

  • Step 1: Preparation - The patient is positioned comfortably, and the external ear canal is examined to ensure that it is clear of any obstructions that may interfere with the imaging process.
  • Step 2: Probe Insertion - A specialized OCT probe, which contains a split light beam (interferometer), is carefully inserted into the external ear canal. This probe is designed to minimize discomfort while allowing for optimal imaging.
  • Step 3: Imaging Process - Once the probe is in place, the OCT system emits light beams into the middle ear. One beam serves as a reference, while the other samples the structures within the ear. The system measures the intensity of light interference from the scattered light, which is crucial for generating images.
  • Step 4: Data Collection - The OCT system collects data on the intensity of the interference patterns, which are then processed to create detailed two or three-dimensional cross-sectional images of the middle ear tissues and bony structures.
  • Step 5: Interpretation and Reporting - After the imaging is complete, the results are interpreted by a qualified healthcare professional. A comprehensive report is generated, detailing the findings and any abnormalities observed during the procedure.

3. Post-Procedure

Following the optical coherence tomography (OCT) procedure, patients may experience minimal discomfort, but there are typically no significant post-procedure care requirements. Patients are usually able to resume normal activities immediately after the procedure. However, it is essential for healthcare providers to review the findings with the patient and discuss any necessary follow-up actions based on the results of the OCT. If any abnormalities are detected, further diagnostic testing or treatment options may be recommended to address the identified issues.

Short Descr OCT MID EAR I&R BILATERAL
Medium Descr OCT MIDDLE EAR WITH I&R BILATERAL
Long Descr Optical coherence tomography (OCT) of middle ear, with interpretation and report; bilateral
Status Code Carriers Price the Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 9 - Concept does not apply.
Bilateral Surgery (50) 2 - 150% payment adjustment does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 9 - Concept does not apply.
Co-Surgeons (62) 9 - Concept does not apply.
Team Surgery (66) 9 - Concept does not apply.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator STV-Packaged Codes
Berenson-Eggers TOS (BETOS) none
MUE 1
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
GW Service not related to the hospice patient's terminal condition
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
Date
Action
Notes
2018-01-01 Added Code Added.
Code
Description
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