periorbital

DEFINITION of periorbital

As an anatomic descriptor, periorbital refers to structures or changes in the soft tissues surrounding the bony orbit: eyelids, adjacent skin, subcutaneous tissue, and periosteum (periorbita). You’ll see it in phrases like periorbital edema (swelling around the eyes), periorbital ecchymosis (raccoon eyes), and periorbital cellulitis (infection of eyelid/skin anterior to the orbital septum).

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ETYMOLOGY of periorbital

latin greek - Periorbital traces to medical Latin periorbita “around the orbit,” built from Greek peri- = around/about/near + Latin orbita = orbit, track, eye socket.

• Greek peri- is a combining form meaning “around; enclosing; near,” seen also in periodontal (around the tooth) and pericardial (around the heart).

• Latin orbita originally meant “wheel track; course; rut” and was later used for the eye socket and planetary paths, giving us orbit.

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RELATED TERMS

Term	Relationship
Orbit	The bony eye socket that periorbital tissues surround
Periorbital cellulitis	Infection of periorbital tissues (also called preseptal cellulitis)
Periorbital edema	Swelling of tissues around the eye
Periorbital osteotomies	Surgical cutting of bones around the eye socket
Periorbital fracture	Fracture involving the orbital bones
Periorbital foramina	Anatomical landmarks in the periorbital region
Exophthalmos	Protrusion of the eye from the orbit (opposite of enophthalmos)
Enophthalmos	Posterior displacement of the eye within the orbit
Orbital periosteum	Alternative name for periorbita
Orbital fascia	Alternative name for periorbita

Orbital (within the orbit), preseptal (in front of the orbital septum), postseptal (true orbital compartment), periocular (around the eye, slightly broader than strictly periorbital).

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Coding and Nuances

ICD-10 CODES (2026)

Periorbital Cellulitis

Code	Description
L03.213	Periorbital cellulitis (billable/specific)

Periorbital Injury/Trauma

Code	Description
S00.11XA	Contusion of right eyelid and periocular area, initial encounter
S00.11XD	Contusion of right eyelid and periocular area, subsequent encounter
S00.11XS	Contusion of right eyelid and periocular area, sequela
S00.12XA	Contusion of left eyelid and periocular area, initial encounter
S00.12XD	Contusion of left eyelid and periocular area, subsequent encounter
S00.12XS	Contusion of left eyelid and periocular area, sequela
S00.201A	Unspecified superficial injury of right eyelid and periocular area, initial encounter
S00.202A	Unspecified superficial injury of left eyelid and periocular area, initial encounter
S01.10XA	Unspecified open wound of eyelid and periocular area, initial encounter

Periorbital Disorders

Code	Description
H02.79	Other degenerative disorders of eyelid and periocular area
H01.81	Other specified inflammation of right upper eyelid
H01.82	Other specified inflammation of right lower eyelid
H01.83	Other specified inflammation of left upper eyelid
H01.84	Other specified inflammation of left lower eyelid

CPT CODES (Related Periorbital Procedures)

Code	Procedure Description
21260	periorbital osteotomies for orbital hypertelorism, with bone grafts; extracranial approach
21268	Periorbital osteotomies for orbital hypertelorism, with bone grafts; intracranial approach
21385	Open treatment of orbital floor fracture; transantral approach (Caldwell-Luc type)
21386	Open treatment of orbital floor fracture; periorbital approach
21390	Open treatment of orbit fracture, including internal fixation and repair of orbital floor with implant (periorbital implant)
21395	Open treatment of orbital floor blowout fracture; periorbital approach with bone graft
67405	Orbitotomy; exploration of orbit (excluding bone), with or without biopsy
67500	Retrobulbar injection (into space behind eyeball, periorbital space)

CLINICAL NOTES

Category	Information
Specialty	Ophthalmology, Oculoplastics, Oral & Maxillofacial Surgery, Dermatology
Anatomy	Includes brow, eyelids, orbital rim, and surrounding soft tissues
Key Structures	Orbicularis oculi muscle, medial palpebral ligament, lacrimal bone
Clinical Significance	Important landmark for trauma, tumors, inflammation, infection, and aesthetic procedures
MeSH Term	Periorbital region (anatomical descriptor)

For your coding brain, the classic “periorbital” diagnosis to remember is periorbital cellulitis:

• **L03.213 - Periorbital cellulitis (cellulitis and acute lymphangitis of face, periorbital region).

• Defined clinically as infection/inflammation of eyelid and skin around the eye anterior to the orbital septum; distinct from orbital cellulitis, which is postseptal and more emergent.

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DERIVATIONS of periorbital

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Query functionality

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Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms