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Official Description

Orbitotomy with bone flap or window, lateral approach (eg, Kroenlein); with drainage

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 67440 involves an orbitotomy, which is a surgical intervention aimed at accessing the orbit, the bony cavity that contains the eye. This specific procedure utilizes a lateral approach, meaning that 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 access. The operation begins with a lazy-S incision made 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 dissects through the soft tissues to expose the zygomatic bone, which is part of the facial skeleton. The periosteum, a dense layer of connective tissue covering the bone, is incised, and the edges are undermined to reveal the hard cortical bone of the zygoma. To create the bone window or flap, holes are drilled into the bone, which are subsequently connected using an oscillating saw. This technique allows for the removal of a precise section of bone, providing access to the orbit. Once the periorbita, the fibrous tissue surrounding the orbit, is incised, the surgeon dissects through the underlying fat and soft tissue attachments to fully expose the orbital cavity. The primary goal of this procedure is to locate and drain any fluid collections that may be present within the orbit, which could be due to various pathological conditions. Once the fluid collection is identified, the surgeon incises the tissues to access and drain the fluid. After drainage, the operative site is typically flushed with sterile saline or an antibiotic solution to reduce the risk of infection. Following the completion of the drainage, the orbital tissues are carefully reapproximated, and the periorbita is closed. The bone window or flap is then replaced and secured in position using miniplates and screws to ensure stability. Finally, the periosteum is closed, and the soft tissues, including the skin of the eyelid, are closed in layers to promote optimal healing and cosmetic outcomes.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The orbitotomy procedure described by CPT® Code 67440 is indicated for various conditions that necessitate access to the orbital cavity for drainage or exploration. The following are explicitly provided indications for this procedure:

  • Fluid Collection The presence of a fluid collection within the orbit, which may be due to conditions such as orbital cellulitis, abscess formation, or other pathological processes that lead to the accumulation of fluid.
  • Orbital Tumors The need to access and evaluate orbital tumors or masses that may be causing symptoms or affecting ocular function.
  • Trauma Management of orbital fractures or trauma that may require surgical intervention to restore anatomical integrity and function.

2. Procedure

The procedure for CPT® Code 67440 involves several detailed steps to ensure effective access and drainage of the orbital cavity. The following procedural steps are outlined:

  • Step 1: Incision A lazy-S incision is made in the upper eyelid crease to provide a cosmetic and functional access point to the orbit. This incision allows for minimal scarring while facilitating access to the underlying structures.
  • Step 2: Muscle Exposure The lateral rectus muscle is identified, exposed, and retracted to create a clear view of the orbital contents. This step is crucial for safely navigating the surgical field without damaging surrounding tissues.
  • Step 3: Bone Exposure The surgeon dissects through the soft tissues to expose the zygomatic bone. The periosteum is incised, and the edges are undermined to reveal the hard cortical bone, which is essential for creating the bone flap.
  • Step 4: Bone Flap Creation Holes are drilled into the zygomatic bone, and these holes are connected using an oscillating saw to create a bone window or flap. This step is critical for gaining access to the orbital cavity.
  • Step 5: Accessing the Orbit The periorbita is incised, and the underlying fat and soft tissue attachments are dissected to fully expose the orbit. This allows the surgeon to visualize and access the fluid collection or any other pathological structures within the orbit.
  • Step 6: Drainage Once the fluid collection is located, the tissues are incised to allow for drainage. This step is vital for alleviating pressure and addressing any infection or inflammation present in the orbital cavity.
  • Step 7: Flushing the Site The operative site is flushed with sterile saline or an antibiotic solution as needed to cleanse the area and reduce the risk of postoperative infection.
  • Step 8: Closure of Orbital Tissues After drainage, the orbital tissues are reapproximated, and the periorbita is closed to restore the anatomical structure of the orbit.
  • Step 9: Bone Flap Replacement The bone window or flap is replaced and secured in position using miniplates and screws, ensuring stability and proper alignment of the bone.
  • Step 10: Final Closure The periosteum is closed, followed by the closure of the soft tissues and skin of the eyelid in layers to promote optimal healing and cosmetic results.

3. Post-Procedure

Post-procedure care following an orbitotomy with drainage involves monitoring for any signs of complications, such as infection or bleeding. Patients may be advised to keep the surgical site clean and dry, and they may be prescribed antibiotics to prevent infection. Pain management is also an important aspect of post-operative care, and patients may receive analgesics as needed. Follow-up appointments are typically scheduled to assess healing and ensure that the orbital cavity is functioning properly. Patients should be informed about potential signs of complications, such as increased swelling, redness, or discharge from the incision site, and instructed to seek medical attention if these occur. Overall, the recovery process will vary depending on the individual patient's condition and the extent of the surgery performed.

Short Descr EXPLORE/DRAIN EYE SOCKET
Medium Descr ORBITOTOMY BONE FLAP/WINDOW LATERAL W/DRG
Long Descr Orbitotomy with bone flap or window, lateral approach (eg, Kroenlein); with drainage
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) 1 - Co-surgeons could be paid, though supporting documentation is required...
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 Device-intensive procedure added to ASC list in CY 2008 or later; paid at adjusted rate.
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
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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