Summary & Overview
CPT 31293: Endoscopic Orbital Decompression, Medial and Inferior Walls
CPT code 31293 identifies an endoscopic orbital decompression procedure in which an endoscope is passed through the nasal cavity to decompress the medial and inferior orbital walls. This surgical approach is important nationally for management of orbital pressure related to trauma, thyroid eye disease, or other causes of orbital compartment syndrome, as it can preserve vision and reduce ocular morbidity while avoiding external incisions. Payers commonly involved in coverage and reimbursement for this procedure include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
This publication provides a concise national overview of CPT code 31293, offering clinical context and payer relevance. Readers will find benchmarks and policy-focused content where available, including typical sites of service and procedure classification. The report also outlines common billing and documentation considerations and summarizes related clinical indications. Data not available in the input will be noted as such in detailed sections. The content is intended to inform coding, billing, and policy discussions at a national level without advising clinical decisions or specific billing actions.
Billing Code Overview
CPT code 31293 describes a procedure in which the provider passes an endoscope through the nasal cavity to decompress the medial and inferior orbital walls. This procedure is an endoscopic orbital decompression targeting the medial and inferior orbital walls and is performed to relieve pressure in the orbital compartment.
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Service type: Endoscopic surgical procedure for orbital decompression
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Typical site of service: Ambulatory surgical center or hospital operating room
Clinical & Coding Specifications
Clinical Context
A 45-year-old male presents to the otolaryngology/ophthalmology service after sustaining blunt orbital trauma from a motor-vehicle collision. The patient reports periorbital swelling, diplopia when looking upward, and infraorbital numbness. CT imaging demonstrates fractures with entrapment and medial and inferior orbital wall depression with signs of orbital compartment syndrome and progressive proptosis. The surgical team elects to perform endoscopic orbital decompression via a transnasal approach.
The clinical workflow includes preoperative evaluation with focused ophthalmic exam (visual acuity, extraocular movements, pupillary responses, intraocular pressure), review of facial CT, informed consent discussing risks including diplopia and vision loss, anesthesia assessment, and perioperative antibiotics as indicated. In the operating room, the surgeon passes a nasal endoscope to access the ethmoid and maxillary sinuses, opens the lamina papyracea, and removes portions of the medial and inferior orbital walls to decompress the orbit. Intraoperative navigation or image guidance may be used. Postoperative care includes ophthalmic checks, nasal packing or splints when indicated, and scheduled follow-up for visual function and assessment of extraocular muscle status.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the work required is substantially greater than typical for due to extensive dissection, bleeding, or combined procedures. |