Summary & Overview
HCPCS S1090: Mometasone Furoate Sinus Implant, 370 mcg
HCPCS Level II code S1090 identifies a mometasone furoate sinus implant delivering 370 micrograms of corticosteroid directly into the sinus cavity. The code represents a targeted, sustained-release device used during or following sinus procedures to reduce local inflammation and improve postoperative outcomes. As a device-specific HCPCS Level II code, S1090 matters nationally because it affects how providers report use of implantable drug-delivery technologies, influences coverage decisions by public and private payers, and factors into facility billing for sinus interventions.
Key payers in the national discussion include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of coverage and billing context for S1090, typical sites of service such as ambulatory surgical centers and hospital outpatient departments, and clinical context for use during sinus procedures. The publication also outlines common benchmarking topics: coding clarity for device billing, reimbursement pathway considerations for implantable drug-delivery devices, and potential policy updates affecting HCPCS Level II device codes. Where specific payer policies or fee benchmarks are required, the report will note whether those data elements are available or state their absence. This summary provides clinicians, coders, and policy analysts with a concise orientation to S1090 and what to expect in deeper sections covering coverage policies, billing guidance, and related clinical references.
Billing Code Overview
HCPCS Level II code S1090 describes a mometasone furoate sinus implant, 370 micrograms. This device is a sustained-release corticosteroid implant inserted into the paranasal sinuses to deliver local anti-inflammatory therapy.
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Service type: Drug-eluting sinus implant
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Typical site of service: Ambulatory surgical centers or hospital outpatient departments for procedures involving sinus surgery or in-office procedures when clinically appropriate
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 48-year-old patient with a history of chronic rhinosinusitis with nasal polyps presents to an otolaryngology clinic for persistent nasal obstruction, facial pressure, and recurrent sinus infections despite maximal medical therapy (intranasal corticosteroids and at least one course of systemic antibiotics). Endoscopic sinus surgery (ESS) is performed, and during the procedure the surgeon places a S1090 mometasone furoate sinus implant (370 micrograms) into the ethmoid or frontal recess to deliver localized corticosteroid directly to the surgical site.
The clinical workflow includes preoperative evaluation and imaging (CT sinus), informed consent for ESS with possible steroid implant placement, intraoperative endoscopic debridement and polypectomy as indicated, placement of the S1090 implant(s), and postoperative follow-up with nasal endoscopy to assess implant position, mucosal healing, and need for debridement. The implant provides sustained local steroid release to reduce inflammation and polyp recurrence during the healing phase after ESS.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work required to place the sinus implant is substantially greater than typical (document increased complexity). |
24 | Unrelated evaluation and management service by the same physician during a postoperative period | Use when an unrelated E/M visit occurs during the global period after implant placement.
25 | Significant, separately identifiable E/M service on the same day as a procedure | Use when a distinct office visit for evaluation is performed the same day as implant placement.
26 | Professional component | Use when billing separates the professional component from a technical component for related services (rare for implant supply code but applicable for associated billed services).
51 | Multiple procedures | Use when multiple distinct procedures are performed in the same session in addition to implant placement (follow payer bundling rules).
59 | Distinct procedural service | Use when the implant placement is a distinct service from other procedures performed at the same session and not normally bundled.
76 | Repeat procedure or service by same physician | Use if the implant is placed again by the same physician during the same operative episode.
77 | Repeat procedure by another physician | Use if a different physician repeats the implant placement during the same episode.
78 | Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period | Use if a return to the OR for management related to the initial implant is required.
79 | Unrelated procedure or service by the same physician during the postoperative period | Use when a subsequent procedure unrelated to the initial ESS/implant occurs in the global period.
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207V00000X | Otolaryngology (ENT) | Primary specialty performing ESS and sinus implant placement. |
207V00000X | Otolaryngology - Head & Neck Surgery | Same clinician group; commonly used taxonomy for surgeons placing sinus implants.
207H00000X | Allergy & Immunology | Manages pre- and post-operative medical therapy for chronic rhinosinusitis with polyps; may coordinate care.
208000000X | General Practice | May refer and provide ongoing medical management and postoperative follow-up in some outpatient settings.
363A00000X | Physician Assistant | Mid-level providers who assist in procedural workflow, postoperative visits, and documentation.
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
J33.9 | Nasal polyp, unspecified | Nasal polyps are a frequent indication for endoscopic sinus surgery and adjunctive placement of a mometasone sinus implant to reduce recurrence. |
J32.9 | Chronic sinusitis, unspecified | Chronic rhinosinusitis motivates surgical intervention and local steroid delivery with S1090 during postoperative healing.
J01.90 | Acute sinusitis, unspecified | Acute exacerbations superimposed on chronic disease may lead to surgical debridement and consideration of local steroid implant placement when appropriate.
J34.2 | Deviated nasal septum | Septal deviation may coexist and be addressed surgically during the same operative session where a sinus implant is placed.
K11.6 | Mucous retention cyst of sinus | Mucosal disease findings encountered intraoperatively that may factor into the decision for local steroid therapy with an implant.
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
31254 | Nasal/sinus endoscopy, surgical; with ethmoidectomy, partial (anterior) | Often performed before or during placement of a S1090 implant as part of endoscopic sinus surgery and polypectomy. |
31276 | Nasal/sinus endoscopy, surgical; with sinusotomy, maxillary and/or frontal and/or sphenoid (can include ethmoid) | Used when broader sinus openings are created during ESS in which implant placement may be indicated.
31237 | Nasal/sinus endoscopy, diagnostic, unilateral or bilateral (separate procedure) | Diagnostic endoscopy commonly performed preoperatively and during follow-up to evaluate implant placement and mucosal healing.
21545 | (Data not available in the input.) | Data not available in the input.
49320 | (Data not available in the input.) | Data not available in the input.