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Official Description

Orbitotomy with bone flap or window, lateral approach (eg, Kroenlein); with removal of foreign body

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 67430 involves an orbitotomy, which is a surgical operation performed to access the orbit, the bony cavity that houses the eye. This specific procedure utilizes a lateral approach, meaning the incision is made on the side of the eye, allowing for direct access to the orbital contents. A bone flap or window is created during the surgery, which involves removing a section of bone to facilitate the exploration and treatment of the area. The primary goal of this procedure is to remove a foreign body that may have entered the orbit, which can cause pain, infection, or other complications. The operation begins with a lazy-S incision in the upper eyelid crease, which helps to minimize visible scarring. The lateral rectus muscle, one of the extraocular muscles responsible for eye movement, is then exposed and retracted to provide a clear view of the underlying structures. The surgeon carefully dissects through the soft tissues to reach the zygomatic bone, where the periosteum, a dense layer of connective tissue covering the bone, is incised. This allows for the drilling of holes and the creation of a bone window or flap, which is essential for accessing the orbit. Once the orbit is exposed, any foreign body present can be located and removed, ensuring that surrounding tissues are preserved as much as possible. After the removal of the foreign body, the surgical site is thoroughly cleaned, and the various layers of tissue, including the bone flap, are meticulously closed to promote proper healing.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The orbitotomy with bone flap or window, lateral approach, as described by CPT® Code 67430, is indicated for specific conditions and scenarios where intervention is necessary. The following are the primary indications for this procedure:

  • Foreign Body Removal The procedure is performed when a foreign body is present in the orbit, which may cause discomfort, infection, or damage to the ocular structures.
  • Lesion Removal It is indicated for the removal of lesions that may be cystic or solid, involving soft tissue and/or bony structures within the orbit.
  • Trauma The procedure may be indicated in cases of orbital trauma where foreign bodies or lesions are present as a result of injury.

2. Procedure

The orbitotomy procedure involves several detailed steps to ensure effective access and treatment of the orbital contents. The following outlines the procedural steps as described:

  • Step 1: Incision A lazy-S incision is made in the upper eyelid crease to provide access to the orbit while minimizing visible scarring. This incision allows the surgeon to reach the lateral aspect of the orbit effectively.
  • Step 2: Muscle Exposure The lateral rectus muscle is identified, exposed, and retracted to create a clear view of the underlying structures. This step is crucial for accessing the orbit without damaging surrounding tissues.
  • Step 3: Soft Tissue Dissection The surgeon carefully dissects through the soft tissues to expose the zygomatic bone. This involves incising the periosteum and undermining its edges to reveal the hard cortical bone beneath.
  • Step 4: Bone Flap Creation Holes are drilled into the zygomatic bone, which are then connected using an oscillating saw to create a bone window or flap. This allows for direct access to the orbital cavity.
  • Step 5: Periorbita Incision The periorbita, a fibrous tissue layer surrounding the orbit, is incised to further expose the orbital contents. This step is essential for accessing any foreign bodies or lesions present.
  • Step 6: Foreign Body or Lesion Removal If a lesion is present, it is carefully dissected free from surrounding tissue, ensuring that all abnormal tissue is removed along with a margin of normal tissue. In the case of a foreign body, it is located, grasped with forceps, and removed, or it may be dissected from surrounding tissue for removal.
  • Step 7: Wound Flushing The surgical site is flushed with sterile saline or an antibiotic solution as needed to reduce the risk of infection and ensure cleanliness.
  • Step 8: Closure The orbital tissues are reapproximated, and the periorbita is closed. The bone window or flap is replaced and secured using miniplates and screws, followed by closure of the periosteum. Finally, the soft tissues and skin of the eyelid are closed in layers to promote optimal healing.

3. Post-Procedure

After the completion of the orbitotomy procedure, specific post-operative care is essential for recovery. Patients are typically monitored for any signs of complications, such as infection or bleeding. Pain management may be provided as needed, and patients are advised to follow up with their healthcare provider for wound assessment and to ensure proper healing. Instructions regarding activity restrictions, such as avoiding strenuous activities or eye strain, may also be given to facilitate recovery. Additionally, any specimens removed during the procedure, such as lesions, are sent for pathology evaluation to determine the nature of the tissue and guide further treatment if necessary.

Short Descr EXPLORE/TREAT EYE SOCKET
Medium Descr ORBITOTOMY BONE FLAP/WINDOW LATERAL RMVL FB
Long Descr Orbitotomy with bone flap or window, lateral approach (eg, Kroenlein); with removal of foreign body
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P4E - Eye procedure - other
MUE 1
CCS Clinical Classification 21 - Other extraocular muscle and orbit therapeutic procedures
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.
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
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)
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