Crystal's MCW Coder Hub🧬CPT Code 30115 - Excision, nasal polyp(s), extensive
Code summary
Code: 30115
Description: Excision, nasal polyp(s), extensive¹¹₁₈
This code represents an intranasal surgical procedure in which the surgeon removes extensive nasal polyp tissue rather than a limited, simple polypectomy.¹¹₁₈
Clinical and procedural description
Nasal polyps are benign inflammatory masses arising from the mucosa of the nasal cavity or paranasal sinuses and can cause chronic nasal obstruction, congestion, and impaired sinus drainage.¹¹₁₈ For cases with widespread polyposis that cannot be adequately addressed with simple polypectomy, an extensive excision is performed via an intranasal approach using direct visualization or nasal endoscopy.¹¹
Typical technique (high level):
- The patient is positioned supine; local anesthesia with sedation or general anesthesia is commonly used in operative settings depending on extent, comorbidities, and surgeon preference.¹¹
- Using a nasal speculum and/or endoscope, the surgeon visualizes the nasal cavity and identifies diffuse polypoid tissue, often involving multiple regions and potentially bilateral involvement.¹¹₁₅₁₈
- Specialized instruments (e.g., forceps, microdebrider, curettes) are used to excise or debulk extensive polypoid tissue from the nasal cavity, sometimes in conjunction with sinus ostial work when indicated.¹¹₁₅
- Hemostasis is achieved with cautery, topical vasoconstrictors, or packing; nasal packing or splints may be placed at the end of the procedure as clinically indicated.¹¹
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Includes and excludes
Included components (typical)
- Intranasal approach to the nasal cavity with visualization of polyps (direct or endoscopic).¹¹
- Excision/debulking of multiple or extensive nasal polyps within the same operative field, unilateral or bilateral as documented.¹¹₁₈
- Routine hemostasis (cautery, packing) and placement of nasal packing or splints when done as part of the usual surgical service.¹¹
- Limited debridement of polyp tissue and mucosa needed to complete the excision.¹¹
Commonly excluded / separately coded when appropriate
- Simple, limited polyp excision: when the work is minor and not extensive, consider 30110 as the more appropriate code.¹⁵₁₈
- Endoscopic sinus surgery (e.g., ethmoidectomy, maxillary antrostomy, frontal or sphenoid sinus procedures) - code with the appropriate 312xx endoscopic sinus procedure codes when full sinus work is documented and not bundled by payer policy.¹⁴
- Septoplasty (e.g., 30520) when performed to correct a deviated septum.
- Inferior turbinate procedures such as 30130 or 30140 when clinically indicated and separately reportable per NCCI edits.¹⁵₁₉
- Postoperative debridement of nasal/sinus cavities when separately billable under payer rules.¹⁴
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Code tree and placement
Within the Nose section of CPT (30000-30999), 30115 sits in the intranasal excision subsection alongside other nasal excision codes.¹⁵₁₁
- 30110 - Excision, nasal polyp(s), simple
- 30115 - Excision, nasal polyp(s), extensive
- 30117 / 30118 - Related but distinct intranasal/inferior turbinate procedures referenced in RUC/MPFS discussions.¹²
- 30130 - Excision inferior turbinate, partial or complete, any method¹⁵
- 30140 - Submucous resection inferior turbinate, partial or complete, any method¹¹₁₉
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Functionally, 30115 is chosen when pathology and operative work exceed simple localized polyp removal but do not rise to the level of a full functional endoscopic sinus surgery (FESS) case coded with 312xx series codes.¹¹₁₄₁₈
wRVU and reimbursement considerations
All CPT surgical codes under Medicare’s Physician Fee Schedule receive relative value units (RVUs) for physician work, practice expense, and malpractice, which are converted to payment using an annually updated conversion factor.¹⁶²⁰ Federal rulemaking examples discuss wRVUs for nearby nasal codes such as 30117 and 30118, confirming that these intranasal procedures are valued under the RBRVS system.¹²
For 30115:
- A specific numeric current-year work RVU value should be taken from the latest MPFS (online lookup or carrier fee schedule), as it is not directly published in the available narrative excerpts.¹²¹⁶²⁰
- Commercial payer rates are often based on the Medicare RVUs but may adjust conversion factors or apply proprietary values.¹⁶²⁰
Because this is a common ENT OR procedure, expect it to have a moderate work RVU reflecting operative time, technical difficulty, and postoperative management, higher than simple polypectomy but generally lower than multi-sinus FESS packages.¹¹₁₅₁₈
Global surgical period
CMS defines global surgical periods to include the procedure and typical postoperative care within a specified timeframe.¹⁷
- 000 - endoscopies or some minor procedures (0-day post-op).¹⁷
- 010 - other minor procedures (10-day global).¹⁷
- 090 - major procedures (90-day global).¹⁷
- YYY - contractor-priced codes where MAC sets the global period.¹⁷
Nasal polyp excision codes like 30115 are generally treated as significant operative procedures with a 90-day global period by Medicare and many commercial plans (090 indicator), meaning routine postoperative visits related to the surgery are included in the surgeon’s global payment.¹⁷
Global period rules also apply to assistant surgeons: even when billing as an assistant, postoperative visits related to the surgery are considered part of the global and not separately payable unless unrelated issues are addressed.¹³¹⁷
Assistant-at-surgery and modifiers
Assistant-at-surgery is commonly allowed for nasal OR procedures when medically necessary, using:²⁰¹⁷
- -80 - Assistant Surgeon
- -81 - Minimum Assistant Surgeon
- [-[82]] - Assistant Surgeon (when qualified resident not available)
Key points:
- Documentation must clearly support the need for an assistant and describe their role, especially for more complex extensive polyp cases or when teaching-hospital rules apply.¹³
- When allowed, assistant surgeons are typically paid a percentage (often around 16%) of the primary surgeon’s allowed amount; this percentage is a general Medicare assistant policy, not specific to 30115.²⁰
- Standard global surgical rules apply to assistant services as well, meaning related post-op visits are bundled into the global period.¹³¹⁷
Other relevant modifiers:
- -51 - Multiple procedures: may apply when 30115 is performed with other distinct nasal or sinus procedures in the same session.¹⁸
- -59 / -XS - Distinct procedural service: use only when a separate anatomical site or distinct service meets NCCI criteria; documentation must clearly support distinctness.¹⁴¹⁷
- -50 - Bilateral procedure: not typically used when the code descriptor or ENT guidance treats the service as inherently unilateral or bilateral by definition; check payer and ENT society guidance.¹⁹
ICD-10-CM diagnosis considerations (not exhaustive)
Common diagnoses used with 30115 include, but are not limited to:
- J33.0 - Polyp of nasal cavity (classic primary diagnosis for nasal polyps)¹⁸
- J33.8 - Other polyp of sinus (when polyps primarily involve sinuses rather than just nasal cavity)¹⁸
- J33.9 - Nasal polyp, unspecified¹⁸
- J32.x - Chronic sinusitis codes when chronic rhinosinusitis is present concurrently (e.g., J32.0 chronic maxillary sinusitis).¹⁸
HCC impact:
- J33.x and most chronic sinusitis codes do not carry CMS-HCC weight in standard Medicare Advantage risk adjustment models and thus typically do not affect risk scores.¹⁸
- From a risk adjustment standpoint, 30115 procedures are driven more by symptom burden and functional impairment than by HCC-based diagnoses.¹⁸
MS-DRG / inpatient facility context
For inpatients, MS-DRG assignment is based on ICD-10-CM diagnoses and ICD-10-PCS procedure codes, not CPT codes.¹⁷²⁰
- 30115 is used on the professional claim or sometimes outpatient facility claim; the inpatient hospital will instead assign a corresponding ICD-10-PCS code describing nasal polyp excision or sinus/nasal surgery.
- The final MS-DRG will fall into an ENT-related surgical DRG when the PCS code is an OR procedure on the nose/sinuses, and the principal diagnosis is an ENT condition such as nasal polyp or chronic sinusitis.
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The exact DRG depends on comorbidities/complications (e.g., CC/MCC status) and the precise PCS code chosen.¹⁷²⁰
Coding examples (conceptual)
Always code to the actual documentation and current payer policies; these examples illustrate patterns, not rigid templates.
Example 1 - Extensive bilateral nasal polyps
- Scenario: Patient with chronic nasal obstruction and CT-proven bilateral nasal polyposis limited mainly to nasal cavities; surgeon performs extensive intranasal excision of polyps without sinus antrostomies.
- CPT:
- 30115 - Excision, nasal polyp(s), extensive.¹¹₁₅₁₈
- ICD-10-CM:
- J33.0 - Polyp of nasal cavity.¹⁸
- Modifiers:
- None typically needed if 30115 is understood to encompass the documented bilateral extensive work.¹⁴¹⁹
Example 2 - Extensive polyp excision plus inferior turbinate resection
- Scenario: Same as Example 1, but the surgeon also performs inferior turbinate reduction due to turbinate hypertrophy causing obstruction.
- CPT:
- Modifiers:
- 51 on the lesser-valued procedure per payer policy for multiple procedures.¹⁸
- ICD-10-CM:
- J33.0 - Polyp of nasal cavity.
- A code for turbinate hypertrophy or nasal obstruction if supported (e.g., J34.3 Hypertrophy of nasal turbinates).¹⁸
Example 3 - Extensive nasal polyps with concurrent endoscopic sinus surgery
- Scenario: Patient with chronic rhinosinusitis with polyps affecting ethmoid and maxillary sinuses; surgeon performs endoscopic sinus surgery plus extensive debridement of polyps.
- CPT (conceptual):
- One or more 312xx FESS codes (e.g., 31255 endoscopic ethmoidectomy, 31256 endoscopic maxillary antrostomy) as primary.¹⁴
- 30115 may not be separately reportable if polyp excision is integral to the sinus procedures; many payers consider polyp removal included in sinus surgery codes.¹⁴¹⁷
- ICD-10-CM:
When sinus codes are billed, coders must consult NCCI edits and ENT society guidance to decide if 30115 is truly distinct or bundled into the sinus procedure work.¹⁴¹⁷
Documentation best practices
For 30115, strong documentation should address:
- Location and extent of polyps (unilateral vs bilateral, nasal cavity vs sinus involvement, degree of obstruction).¹¹₁₈
- Description of the work that establishes why the case is “extensive” rather than simple - e.g., multiple regions, prolonged operative time, significant polyp burden.¹¹₁₅
- Any concurrent nasal/sinus procedures (septoplasty, turbinate reduction, sinus antrostomy, ethmoidectomy) and clear separation of indications for each.¹⁴¹⁵
- Preoperative medical therapy failure (steroids, saline irrigation, etc.) for payers requiring conservative management before surgery approval.¹¹₁₈
- Postoperative plan, including packing, splints, and follow-up, consistent with a major nasal procedure and a 90-day global when applicable.¹⁷
Thorough, anatomy-specific operative detail helps justify the use of 30115 over 30110 and supports correct valuation and bundling decisions when multiple ENT procedures are performed in the same session.¹¹¹⁴¹⁵¹⁸
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