08T9XZZ
Resection Cornea, Left to No Qualifier with No Device, External Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 8 Eye |
| Operation | T Resection |
| Body Part | 9 Cornea, Left |
| Approach | X External |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Cutting out or off, without replacement, all of a body part
Procedure Overview
Resection procedures in the eye involve cutting out an entire body part without replacing it, most notably enucleation of the globe for conditions such as intraocular tumors, severe trauma, or a blind and painful eye, and evisceration or excision of other complete ocular structures like the lacrimal gland. These are definitive, irreversible procedures reserved for situations where a structure is diseased beyond salvage or poses an ongoing risk, such as malignancy or infection, that outweighs any benefit of preserving it.
Because Resection removes an entire body part rather than a portion of it, these procedures carry significant functional and cosmetic consequences, and they are typically followed by reconstructive or prosthetic planning as a separate consideration. The decision to resect is made only after other treatment options have been exhausted or are not viable given the severity of the underlying condition.
Anatomy & Axis Detail
Cornea, Left
The left cornea forms the curved, transparent anterior window of the eye, essential for both focusing light and shielding the intraocular contents from the environment. Coding this structure as fully resected reflects removal of the entire cornea, a drastic step generally driven by catastrophic injury, uncontrolled infectious keratitis, or malignancy that has destroyed the tissue beyond the point where a partial-thickness or full-thickness transplant alone could restore it. Given the cornea's avascular nature and reliance on limbal stem cells for renewal, its complete excision leaves the eye highly vulnerable and almost always requires urgent tectonic reconstruction, such as a corneal graft, amniotic membrane, or other supportive material, to maintain globe integrity. Documenting laterality is important since corneal disease processes, prior surgeries, and outcomes commonly differ between the right and left eyes in the same patient.
Approach: External
External approach applies to procedures performed directly on the skin or mucous membrane, or on an accessible body surface, without any instrumentation passing through a puncture or orifice. It covers things like manual reduction of a fracture or excision of a skin lesion. It differs from Via Natural or Artificial Opening in that no internal passage is entered at all, only the exposed surface.
Coding & Documentation
Coders assign Resection when the documentation confirms complete removal of an entire named body part, such as the whole eyeball in enucleation or the entire lacrimal gland, distinguishing it from partial excision procedures that would be coded as Excision instead. The operative note must clearly state that the entire structure was removed, not merely a lesion or portion of it, and coders need to identify the precise qualifying body part being resected.
A common error is applying Resection to biopsy or partial tumor excision cases where only a lesion or segment of tissue was removed, which actually falls under Excision; another is confusing enucleation, evisceration, and exenteration, three distinct eye removal procedures with different anatomic scope that require careful reading of the operative report to code correctly.