Summary & Overview

CPT 31081: Frontal Sinus Obliteration via Coronal Incision

CPT code 31081 represents an open surgical frontal sinus obliteration performed through a coronal scalp incision with packing of the frontal sinus to render it nonfunctional. This code captures a definitive surgical approach typically used for recurrent or refractory frontal sinus disease, complex frontal sinus pathology, or situations where endoscopic techniques are not appropriate. Nationally, accurate coding for this procedure affects clinical case mix classification, hospital surgical reporting, and reimbursement for craniofacial/skull base services.

Key payers in the national landscape include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context of the procedure, expected sites of service, and which payers commonly cover such surgical services. The publication summarizes benchmarking considerations, coding and documentation implications for operative reporting, and policy or coverage themes relevant to complex sinus surgery. Data not available in the input for payer-specific rates, associated taxonomies, and ICD-10 diagnoses are noted as unavailable. The piece equips coding professionals, surgical teams, and revenue leaders with the essential facts needed to identify when CPT code 31081 applies and where to look for more detailed coverage and billing guidance.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare31081CPTfrontal sinussinus obliterationcraniofacial surgeryoperating roomsurgical codingENT surgery

Billing Code Overview

CPT code 31081 describes a surgical procedure in which the provider makes a coronal incision on the scalp, advances into the frontal sinus, and packs the sinus with material to obliterate it, rendering the sinus nonfunctional. This procedure is a form of frontal sinus obliteration performed via an open cranial approach.

Service type: Surgical procedure — frontal sinus obliteration via coronal incision
Typical site of service: Hospital operating room or inpatient surgical setting

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult presenting with chronic, refractory frontal sinus disease — for example, recurrent frontal sinus mucocele, osteomyelitis of the frontal sinus, or severe frontal sinus fractures with persistent cerebrospinal fluid leak or intractable infection. After failed medical management and less invasive endoscopic or external drainage procedures, the surgical team elects an open external frontal sinus obliteration using a coronal scalp incision. The workflow includes preoperative imaging (CT sinus, occasionally MRI), preoperative planning with otolaryngology and often neurosurgery for skull base involvement, consent, general endotracheal anesthesia, and positioning for a coronal approach. The surgeon makes a coronal incision through the scalp, elevates the forehead flap, accesses and exenterates the frontal sinus mucosa, and obliterates the frontal sinus cavity by packing with autologous fat, muscle, bone, or other material to render the sinus nonfunctional. Hemostasis is secured, drains may be placed, and the wound is closed in layers. Postoperative care includes inpatient observation, antibiotics if indicated, wound care, and follow-up imaging or endoscopic assessment as needed. Typical site of service is an inpatient or ambulatory surgical center operating room depending on case complexity; given the invasive open approach, many cases occur in hospital operating rooms. Common patient scenario: a 45-year-old with recurrent frontal sinus mucocele after prior frontal sinusotomy and persistent symptoms, scheduled for frontal sinus obliteration via coronal approach under general anesthesia.

Coding Specifications

Modifier	Description	When to Use

Taxonomy Code	Specialty	Notes
207Y00000X	Otolaryngology	Primary specialty performing frontal sinus obliteration; manages sinus disease and performs open approaches.
207PT0000X	Plastic and Reconstructive Surgery	Reconstructive expertise often involved when complex forehead/scalp reconstruction or cosmetic closure is needed.
2084P0800X	Neurosurgery	Skull base involvement: consulted when frontal sinus disease extends to anterior cranial fossa or when dural repair is required.
363L00000X	General Surgery	Occasional involvement for complex head and neck cases in some centers.
207K00000X	Head and Neck Surgery	Subspecialty within ENT that may perform complex sinus and skull base procedures.

CPT Code	Description	Relationship to This Procedure
`31030`	Drainage of frontal sinus; intraoral or external approach	May be performed before or instead of obliteration for acute drainage or abscess management.
`31255`	Nasal endoscopy, surgical with frontal sinusotomy (trephination)	Often used preoperatively or as a less invasive alternative; prior endoscopic attempts may precede `31081`.
`61620`	Craniectomy, transcranial; for frontal sinus access and cranialization	Performed when cranialization of frontal sinus or skull base reconstruction is required in conjunction with obliteration.
`20155`	Excision of frontal bone lesion, craniectomy for access (reconstruction may be separate)	May be required when bone debridement or external access to the frontal sinus is needed.
`20900`	Bone graft, minor or small	Used when autologous bone grafting is performed as part of reconstruction following sinus obliteration.

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