ICD-10-PCS Billable Code

09TP0ZZ

Resection Accessory Sinus to No Qualifier with No Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body System9 Ear, Nose, Sinus
OperationT Resection
Body PartP Accessory Sinus
Approach0 Open
DeviceZ No Device
QualifierZ No Qualifier

Operation Definition

Cutting out or off, without replacement, all of a body part

Procedure Overview

Resection procedures remove an entire ear, nose, or sinus structure without replacing it, most often to treat cancer, extensive chronic infection, or irreversible structural damage. A total mastoidectomy, which clears out diseased mastoid air cells down to the bone in cases of severe chronic otitis media or cholesteatoma, is a common example, as is total or subtotal removal of a nasal or sinus structure for tumor control. Total auriculectomy, removing the entire external ear, may be performed for skin cancer that has invaded the ear's cartilage framework.

Because resection removes the whole body part rather than just a portion, it's a more definitive and often more disfiguring intervention than partial excision, and it's usually reserved for situations where conservative treatment or partial removal wouldn't adequately control disease. Reconstruction, if performed, happens as a separate step - sometimes in the same operative session, sometimes staged for later.

Anatomy & Axis Detail

Accessory Sinus

"Accessory sinus" is used when a sinus procedure is not attributable to one of the four named paired sinuses individually, such as when disease or the surgical plan spans multiple sinus cavities treated as a single unit. Resection of the accessory sinus removes all of the involved sinus tissue, generally for extensive inverted papilloma, sinonasal malignancy, or unmanageable chronic sinusitis with polyposis crossing sinus boundaries. Because the paranasal sinuses are contiguous air-filled cavities lined by respiratory mucosa and separated by thin bony septa, disease can spread between them, and surgeons may elect a combined procedure rather than isolated sinusotomies. Coding to this body part is appropriate only when the operative note does not support separate, body-part-specific resections of the maxillary, frontal, ethmoid, or sphenoid sinuses.

Approach: Open

Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.

Coding & Documentation

Resection applies only when documentation confirms the entire named body part was removed, not a portion of it; removing part of a turbinate or part of the septum is Excision, not Resection, so coders need to read the operative note carefully for words like 'total,' 'complete,' or a clear statement that the whole structure was taken. Pathology reports describing the specimen can help confirm the extent of removal when the operative note is ambiguous.

The most frequent error is applying Resection to procedures that actually removed only a portion of a body part, inflating the code to a higher-acuity procedure than what was performed. Coders should also be alert to mastoidectomy terminology, since 'cortical' or 'simple' mastoidectomy is usually a partial procedure (Excision) while 'radical' or 'total' mastoidectomy meets the threshold for Resection.

Commonly Confused With

ExcisionResection is most often confused with Excision, and the entire-versus-partial distinction is what separates them - this is the single most important documentation detail to verify.
ReplacementIt's also distinct from Replacement, since Resection leaves no substitute in place, and from Destruction, which eradicates tissue in place (such as with cautery or laser) rather than cutting it out.