Coding for a Fess Procedure

Question:

What is the recommended CPT coding for a nasal/sinus endoscopy with a total ethmoidectomy, frontal sinus exploration with removal of tissue from frontal sinus, a sphenoidotomy with removal of tissue from sphenoid, and a maxillary antrostomy with removal of tissue from maxillary sinus?

Answer:

For a functional endoscopic sinus surgery (FESS) involving the procedures you listed, the recommended CPT codes are:

• Total ethmoidectomy (anterior + posterior): 31259 – Nasal/sinus endoscopy, surgical; with ethmoidectomy, total (anterior and posterior) including sphenoidotomy, including removal of tissue from the sphenoid sinus.

• Frontal sinus exploration with removal of tissue: 31276 – Nasal/sinus endoscopy, surgical; with frontal sinus exploration, including removal of tissue from frontal sinus.

• Maxillary antrostomy with removal of tissue: 31267 – Nasal/sinus endoscopy, surgical; with maxillary antrostomy, with removal of tissue from maxillary sinus.

CPT code 31259 is a combination code that includes anterior and posterior ethmoidectomy and the sphenoidotomy which includes the removal of tissue from the sphenoid sinus. These codes are separate and distinct procedures because they involve different sinus cavities, so they are typically reportable together (when medically necessary and documented). If performed bilaterally, append modifier -50 (or follow payer-specific bilateral reporting rules). The “with removal of tissue” codes (31267, 31276, 31259) are appropriate since tissue removal is documented. Do not separately report diagnostic endoscopy (31231) — it is included in the surgical procedures.

*This response is based on the best information available as of 06/04/26.

CPT Code 42842 vs. 42844

Question:

I have a question. Which CPT code would I use? If local tissue rotational flaps isn’t done, would we report CPT 42842 or CPT 42844? Is it appropriate to bill CPT 42844 if local tissue rotational flaps aren't performed? Per documentation. "We then commenced with primary closure of the defect with 3-0 Vicryl in a horizontal mattress fashion."

Answer:

Thank you for your great question. CPT code 42844 would not be appropriate code based on the documentation as written. Your note states: "primary closure of the defect with 3-0 Vicryl in a horizontal mattress fashion." This describes a primary/direct closure (approximating wound edges with sutures), not a local tissue rotational flap. These are fundamentally different techniques:

• Primary closure = suturing wound edges together

• Local tissue flap = mobilizing and rotating/advancing adjacent tissue to cover a defect (e.g., rotation flap, advancement flap, transposition flap)

A local tissue flap requires distinct documentation of flap design, elevation, rotation/advancement, and inset — none of which are described here. Based on the documentation the correct code to report is 42842.

*This response is based on the best information available as of 05/07/26.

Removing a Nasal Pack

Question:

I have looked everywhere and cannot find a CPT code for removing a posterior nasal pack. I found CPT code 30906 for reporting control of a nasal hemorrhage when removing and replacing the pack. Can I report 30906 with Modifier 52 since my doctor is just removing the posterior nasal pack?

Answer:

No, you do not report 30906. There is not a code for removing a posterior pack unless you are replacing the pack at the same time. If you are only removing a pack then report an E/M CPT code or nasal endoscopy code (31231) whichever is more appropriate.

*This response is based on the best information available as of 04/02/26.

CPT 42160 for Laser Ablation of a Soft Palate Papilloma

Question:

Can CPT code 42160 be used for a laser ablation of the velum surface of the soft palate papilloma (ie. is the laser considered thermal)?

Answer:

CPT 42160 is reported based on destruction of the lesion. If the documentation supports destruction of a soft palate papilloma, laser ablation qualifies as a thermal technique and meets the criteria for the code.

*This response is based on the best information available as of 03/05/26.

Reporting Rhinoplasty with Septal Repair

Question:

Our physician frequently performs septorhinoplasty procedures to address severe septal deviation and, in some cases, nasal valve collapse. He typically bills CPT 30420, which includes major septal repair. However, we are seeking clarification due to conflicting references: the Coders’ Desk Reference describes 30420 as involving nasal bone fracture and repositioning, and other sources suggest it is primarily a cosmetic procedure. Given that our physician’s intent is functional, improving airway obstruction, does CPT 30420 still apply? Is reshaping of the nasal tip or dorsal hump required to justify 30420, or would CPT 30520 (septoplasty) be more appropriate in these cases?

Answer:

The Coders’ Desk Reference includes an introductory disclaimer stating that each procedural description represents one possible method of performing the service and should not be interpreted as the only acceptable approach. Its narrative examples are intended to illustrate common surgical techniques, not to define the required components of the CPT code itself. If both a rhinoplasty and septoplasty are performed, report 30420 to capture the combined procedure, as this code includes major septal repair. Ensure that the appropriate functional or reconstructive diagnosis is reported on the claim to support medical necessity.

*This response is based on the best information available as of 02/05/26.

Sigmoid Sinus Resurfacing During Mastoidectomy

Question:

I have an ENT provider that performed a Mastoidectomy (69502) with sigmoid sinus resurfacing for pulsatile tinnitus. What CPT would I use for the sigmoid sinus resurfacing using bone cement and dust?

Answer:

A standard cortical mastoidectomy includes exposure and skeletonization of the sigmoid sinus. When additional work is performed to resurface or reconstruct a dehiscent sigmoid sinus for pulsatile tinnitus, this typically represents increased complexity of the mastoidectomy and is best reported with modifier 22 appended to CPT 69502 (or 69601 for revision cases). Because CPT does not provide a specific code for sigmoid sinus resurfacing and the work is performed through the mastoid, an unlisted code may need to be used in situations where the operative work is extensive and cannot be reasonably captured with modifier 22. Bone dust or bone pate obtained incidentally from mastoid drilling is considered local bone and is included when no separate donor incision is made. Bone cement is reported by the facility using the appropriate HCPCS supply code and is not separately reported by the physician.

*This response is based on the best information available as of 01/22/26.