30520

🧬CPT Code 30520: Septoplasty or Submucous Resection

📋 Code Information

Field	Value
CPT Code	30520
Descriptor	Septoplasty or submucous resection, with or without cartilage scoring, contouring or replacement with graft
Section	Repair Procedures on the Nose (30400-30630)
Approach	Endonasal (transnasal) or open
Global Period	90 days
Effective Date	1990 (approx.)
Last Updated	2026-01-01 (no change from 2025)

📖 Clinical Description

CPT 30520 describes a surgical procedure to correct a deviated nasal septum, the wall of cartilage and bone that separates the two nostrils. This functional surgery is performed to improve nasal airflow, relieve nasal obstruction, and alleviate symptoms such as difficulty breathing, chronic nasal congestion, recurrent sinusitis, and sleep-disordered breathing.^{[1][2][6][10]}

Anatomical Context

The nasal septum is composed of:

• Quadrangular cartilage (anterior portion)
• Perpendicular plate of the ethmoid bone (superior/posterior)
• Vomer bone (inferior/posterior)

Deviation can occur in any of these components and may be congenital or result from trauma.

Procedure Steps^[10]

1. Incision: The surgeon makes an incision inside the nostril (hemitransfixion or Killian incision) to access the septal mucosa.
2. Mucoperichondrial Flap Elevation: The mucosal lining is carefully elevated off the septal cartilage and bone on one or both sides.
3. Resection/Recontouring: Deviated portions of cartilage and bone are trimmed, reshaped, scored, or partially removed while preserving adequate dorsal and caudal support to prevent saddle nose deformity.
4. Grafting (if needed): Resected cartilage may be repositioned as a graft, or additional cartilage (e.g., from auricle or rib) may be used for reconstruction.
5. Flap Repositioning: The mucosal flaps are repositioned and typically held in place with absorbable sutures or nasal packing.
6. Packing/Splints (optional): Internal nasal splints or packing may be placed temporarily to stabilize the septum and prevent hematoma.

Indications^[2][5]

• Symptomatic nasal obstruction due to septal deviation
• Recurrent sinusitis associated with septal deviation
• Septal spur causing contact headache or facial pain
• Failed medical management (nasal steroids, decongestants)
• Obstructive sleep apnea (as part of comprehensive airway surgery)^[2]
• Access for transsphenoidal surgery
• Septal harvest for graft material in rhinoplasty

🔍 Includes and Inclusions

• Septoplasty: Surgical straightening of the nasal septum^[6]
• Submucous Resection (SMR): Removal of deviated cartilage and bone while preserving overlying mucosa^[6]
• Cartilage Scoring: Partial-thickness cuts to alter cartilage shape^[6][10]
• Cartilage Contouring: Shaping or reshaping of septal cartilage^[6]
• Graft Placement: Replacement of resected cartilage with graft material (septal, auricular, rib)^[6]
• Unilateral Procedure: Code is inherently unilateral; no modifier 50 needed as septum is a single midline structure^[10]

🚫 Excludes and Differentiating Codes

Rhinoplasty Codes (Cosmetic vs. Functional)^[5][6]

Code	Description	When to Use
30520	Septoplasty (functional airway surgery)	Primary indication is airway improvement
30420	Rhinoplasty including major septal repair	Combined cosmetic/facial reshaping with septal work[5][6]
30400	Rhinoplasty, primary; lateral and alar cartilages and/or elevation of nasal tip	Cosmetic tip surgery without major septal repair[6]
30465	Repair of nasal vestibular stenosis	Stenosis repair, not primary septal deviation[5][6]

Key Distinction: Septoplasty Alone vs. Septorhinoplasty^[5]

Scenario	Correct Code
Septal deviation causing obstruction, no external nasal changes	30520
Septal deviation with external nasal deformity requiring rhinoplasty	30420 (Rhinoplasty with major septal repair)[5][6]

Turbinate Procedures^[9]

Code	Description	Relationship to 30520
30930	Fracture nasal inferior turbinate(s), therapeutic	May be reported separately with 30520; not bundled[9]
30801/30802	Cautery/ablation of inferior turbinates	May be reported separately if performed

Sinus Surgery Codes^[2]

Code	Description
31253-31288	Functional endoscopic sinus surgery (FESS) codes[2]

Balloon Septoplasty^[10]

• Traditional septoplasty with incisions: Use 30520^[10]
• Balloon dilation without incisions: Use unlisted code 30999 (Unlisted procedure, nose) with comparison code 31295^[10]
• Balloon dilation plus incisions: Use 30520 (incisions were made)^[10]

📊 Code Tree and Hierarchy

flowchart TD
    A["30400-30630 Repair Procedures on the Nose"] --> B["30400-30420 Rhinoplasty"]
    B --> C["30400 Primary rhinoplasty"]
    B --> D["30410 Secondary rhinoplasty"]
    B --> E["30420 Rhinoplasty with major septal repair"]
    
    A --> F["30430-30450 Revision Rhinoplasty"]
    A --> G["30460-30462 Cleft lip rhinoplasty"]
    
    A --> H["30520 SEPTOPLASTY OR SUBMUCOUS RESECTION"]
    A --> I["30540-30545 Choanal atresia repair"]
    A --> J["30560 Lysis of intranasal synechiae"]
    A --> K["30580-30630 Fistula and stenosis repairs"]
    
    A --> L["30465 Repair of nasal vestibular stenosis"]
    
    style H fill:#4169E1,stroke:#333,stroke-width:2px,color:white

🔄 Modifiers and Billing Nuances

Applicable Modifiers for 30520^[1]

Modifier	Description	Application
-22	Increased Procedural Services	Use when work required is substantially greater than typical (e.g., extensive scarring, severe deviation, revision surgery). Documentation must support additional work.[1]
-51	Multiple Procedures	Use when multiple procedures are performed during same session (e.g., septoplasty + turbinate reduction). Medicare applies automatically.[1]
-52	Reduced Services	Use when service is partially reduced or eliminated.[1]
-59	Distinct Procedural Service	Use to indicate procedure is distinct from other services; rarely needed for 30520 alone but may apply with other nasal/sinus procedures at separate sites.[1]
-76	Repeat Procedure by Same Physician	Use if procedure repeated on same day.[1]
-77	Repeat Procedure by Another Physician	Use if repeated by different physician on same day.[1]
-78	Unplanned Return to OR	Use for related procedure during postoperative period (e.g., evacuation of septal hematoma).[1]
-79	Unrelated Procedure	Use for unrelated procedure during postoperative period.[1]
-99	Multiple Modifiers	Use when two or more modifiers are necessary.[1]

Assistant Surgeon Modifiers for 30520^[1][4]

Modifier	Description	Payment Status
-80	Assistant Surgeon	Payment restrictions may apply - check MPFS indicator[1]
-82	Assistant Surgeon (resident not available)	Teaching hospital when resident unavailable[1][4]
-AS	Non-Physician Assistant at Surgery	PA, NP, RNFA, CNS assisting[4]

Important Modifier Notes

• No Laterality Modifiers: The nasal septum is a midline structure. Do not use modifiers -LT, -RT, or -50 with 30520.^[10]
• Modifier -22 Documentation: When billing for increased complexity, the operative report must clearly document unusual circumstances (e.g., “severely deviated septum with extensive bony spur requiring drill-out,” “revision surgery with dense scar tissue”).^[1]
• Modifier -59 with Turbinates: If payer denies bundled 30930 with 30520, modifier -59 may be used as a last resort after appealing with 2006 descriptor change argument.^[9]

👨‍⚕️ Assistant Surgeon (Modifier 80) Payability

Assistant Surgeon Status for 30520

For a routine septoplasty, an assistant surgeon is rarely medically necessary. This procedure is typically performed by a single surgeon.

Medicare Payment Indicators^[4]

To determine whether assistant surgeon services are payable for 30520, check the Medicare Physician Fee Schedule Database (MPFSDB) “Asst Surg” indicator:

Indicator	Meaning	Likely Status for 30520
0	Payment restriction applies; supporting documentation required	Likely (minor to moderate procedure)
1	Statutory payment restriction; assistants not paid	Possible
2	Payment restriction does NOT apply; assistants may be paid	Unlikely
9	Concept does not apply	—

Assistant Surgeon Modifier Usage^[4]

• -80: Physician assistant at surgery - requires documentation of medical necessity
• -82: Assistant when qualified resident not available - for teaching hospitals only
• [-AS]]: Non-physician assistant (NP, PA, RNFA) - billed under the assistant’s NPI^[4]

Documentation Requirements for Teaching Hospitals^[4]

If an assistant surgeon is used, documentation must support one of the following when surgery is performed in a teaching hospital:

• A statement that no qualified resident was available to perform the service
• A statement indicating that exceptional medical circumstances exist
• A statement indicating the primary surgeon has an across-the-board policy of never involving residents in patient care

Clinical Reality

For 30520, assistant surgeon services are not typically billed or reimbursed. The procedure is generally straightforward and does not require an assistant. Billing with assistant modifiers would likely trigger medical necessity review and potential denial.

💰 Work RVU (wRVU) and Reimbursement

Work RVU Information

The Work Relative Value Units (wRVU) for 30520 are updated annually by CMS. For current values:

• 2026 Reference: Consult the most recent CMS Physician Fee Schedule (PFS) Final Rule or the AMA RBRVS DataManager
• Reimbursement Factors: Final payment determined by:
  • Total RVUs (Work + Practice Expense + Malpractice)
  • Geographic Practice Cost Index (GPCI) for your area
  • National conversion factor

2026 Medicare Payment Updates

Factor	Value
Conversion Factor (non-QP)	$33.4009
Conversion Factor (QP)	$33.5675
Efficiency Adjustment	-2.5% applied to work RVUs for non-time-based codes, including 30520

Important Note:

CMS has finalized a -2.5% productivity/efficiency adjustment applied to work RVUs for approximately 7,700 non-time-based codes, including surgical procedures. This will affect the 2026 wRVU values compared to prior years.

Medicare Coverage^[1]

• 30520 is reimbursed by Medicare when deemed medically necessary
• Code is listed on the Medicare Physician Fee Schedule (MPFS)^[1]
• Coverage and reimbursement may vary depending on the specific Medicare Administrative Contractor (MAC) in your region^[1]
• Medical necessity must be clearly documented (e.g., nasal obstruction, failed medical management)^[1]

📋 Documentation Requirements

To support billing of 30520, the operative report should clearly document:^[1][10]

• Preoperative Diagnosis: “Deviated nasal septum,” “nasal septal deviation,” or specific code
• Symptoms: Nasal obstruction, difficulty breathing, recurrent sinusitis, etc.
• Failed Medical Management: Trial of nasal steroids, decongestants, or other conservative therapy
• Procedure Performed: “Septoplasty” or “submucous resection of nasal septum”
• Findings: Description of the deviation (location, severity, components involved - cartilage, bone, spur)
• Technique: Incision type, extent of resection, cartilage scoring, contouring, graft placement
• Graft Details: If graft used, source (septal, auricular, rib) and purpose
• Concurrent Procedures: If turbinate reduction performed, document separately
• Packing/Splints: Whether packing or internal splints were placed
• Estimated Blood Loss: Standard documentation
• Complications: Any intraoperative issues

Critical Documentation Elements^[9][10]

Element	Why It Matters
Deviation Description	Supports medical necessity
Failed Conservative Therapy	Supports medical necessity for Medicare
Graft Documentation	Supports code descriptor (“with graft”)
Turbinate Procedure Documentation	Supports separate reporting of 30930 if performed[9]

ICD-10 Documentation Tips^[2]

Document the specific type and cause of deviation:

• Congenital vs. traumatic
• Anterior vs. posterior
• Cartilaginous vs. bony
• Associated conditions (e.g., sinusitis, sleep apnea)^[2]

📊 ICD-10 Crosswalk and HCC Information

Primary ICD-10 Diagnoses for 30520^[2]

ICD-10 Code	Description	HCC Applicability
J34.2	Deviated nasal septum	No (0)
J34.89	Other specified disorders of nose and nasal sinuses	No (0)
J34.3	Hypertrophy of nasal turbinates (when with septal deviation)	No (0)
J32.9	Chronic sinusitis, unspecified (when associated with septal deviation)[2]	No (0)
J32.0-J32.4, J32.8	Other chronic sinusitis codes[2]	No (0)
J33	Nasal polyp (when with septal deviation)[2]	No (0)
J33.0	Polyp of nasal cavity[2]	No (0)
J33.8	Other polyp of sinus[2]	No (0)
J33.9	Nasal polyp, unspecified[2]	No (0)
G47.33	Obstructive sleep apnea (adult) (pediatric) (when septoplasty for OSA)[2]	Yes (HCC depending on model)
R06.5	Mouth breathing (symptom)	No (0)
R06.83	Snoring	No (0)
S03.8XXA	Sprain of joints and ligaments of other parts of head (traumatic deviation)	No (Trauma)
S09.8XXA	Other specified injuries of head (traumatic deviation)	No (Trauma)
Z87.49	Personal history of other diseases of the respiratory system	No (0)

Associated Conditions^[2]

ICD-10 Code	Description	HCC Applicability
J45	Asthma (when exacerbated by nasal obstruction)[2]	Yes (HCC 110-112 depending on severity)
I10-I16	Hypertension (comorbid)[2]	Yes (HCC depending on model)
E08-E13	Diabetes mellitus (comorbid)[2]	Yes (HCC depending on model)
E65-E68	Obesity (comorbid)[2]	Yes (HCC 22)
F17	Nicotine dependence (comorbid)[2]	Yes (HCC depending on model)
F40-F48	Anxiety (comorbid)[2]	Yes (HCC 57-59)
F33	Major depressive disorder (comorbid)[2]	Yes (HCC 57-59)

HCC Note^[2]

• Deviated septum (J34.2) is not an HCC risk adjuster
• Obstructive sleep apnea (G47.33) may map to HCC depending on model version^[2]
• Comorbid conditions (asthma, diabetes, obesity, hypertension) are significant risk adjusters^[2]
• The procedure code itself (30520) is a CPT code and does not contribute to HCC risk adjustment

🏥 MS-DRG Assignment

When performed in an inpatient setting (rare; typically outpatient), septoplasty maps to the following Medicare Severity-Diagnosis Related Groups (MS-DRGs):

For Mouth/Nose Procedures

MS-DRG	Description
137	Mouth procedures with CC/MCC
138	Mouth procedures without CC/MCC

For Sleep Apnea (if principal diagnosis)

MS-DRG	Description
152	Otitis media and URI with MCC
153	Otitis media and URI without MCC

ICD-10-PCS Procedure Code^[7]

For hospital inpatient coding, septoplasty is reported with ICD-10-PCS codes:

Approach	ICD-10-PCS Code	Description
Open	09SM0ZZ	Reposition Nasal Septum, Open Approach[7]

ICD-9 Crosswalk^[7]

ICD-9-CM Code	Description	Mapping Type
21.88	Other septoplasty	Approximate/GEM[7]

📝 Coding Examples and Scenarios

Example 1: Simple Septoplasty

Scenario: A 35-year-old patient with nasal obstruction due to deviated nasal septum (J34.2) fails medical management with nasal steroids. The surgeon performs an endonasal septoplasty with resection of deviated cartilage and bone. No turbinate work performed. Coding:

• 30520 (Septoplasty or submucous resection)
• J34.2 (Deviated nasal septum)
• Rationale: Classic septoplasty for functional airway improvement.^[1][2][6]

Example 2: Septoplasty with Inferior Turbinate Outfracture

Scenario: A 45-year-old patient with nasal obstruction due to deviated septum and bilateral inferior turbinate hypertrophy. The surgeon performs septoplasty and bilateral inferior turbinate outfracture. Coding:

• 30520 (Septoplasty or submucous resection)
• 30930 - -50 (Fracture nasal inferior turbinate(s), therapeutic, bilateral)
• J34.2 (Deviated nasal septum)
• J34.3 (Hypertrophy of nasal turbinates)
• Rationale: Inferior turbinate outfracture is not bundled with septoplasty and may be reported separately. No modifier needed for 30930 with 30520.^[9]

Example 3: Septoplasty with Cartilage Graft

Scenario: A 50-year-old patient with severe caudal septal deviation requires septoplasty with removal of deviated cartilage and repositioning as a graft to support the nasal tip. Coding:

• 30520 (Septoplasty or submucous resection, with graft)
• J34.2 (Deviated nasal septum)
• Rationale: Code descriptor includes graft placement.^[6]

Example 4: Septoplasty with Turbinate Cautery - Denied Claim

Scenario: Surgeon performs septoplasty and bilateral turbinate cautery. Payer denies the turbinate cautery as bundled with septoplasty. Coding Appeal:

• Initial Coding: 30520 + 30802 - -50
• Denial Reason: Payer cites CPT Assistant 2002 guidelines bundling turbinate procedures
• Appeal Argument: Reference the 2006 CPT descriptor change for 30930 (now specific to inferior turbinates) and argue that turbinate cautery (30802) is also a separate, non-incidental procedure. If payer remains unmoved, consider modifier -59 as last resort.^[9]

Example 5: Septorhinoplasty (Functional + Cosmetic)

Scenario: A 40-year-old patient has nasal obstruction due to deviated septum and desires improvement of external nasal appearance (dorsal hump). The surgeon performs rhinoplasty with dorsal reduction and septoplasty. Coding:

• Correct: 30420 (Rhinoplasty, primary; including major septal repair)^[5][6]
• Incorrect: 30520 + rhinoplasty codes
• Rationale: When septal repair is performed as part of cosmetic rhinoplasty, use the combined code 30420.^[5][6]

Example 6: Balloon Septoplasty (Without Incisions)

Scenario: Surgeon performs septoplasty using balloon dilation device without making incisions into septal mucosa. Coding:

• Correct: 30999 (Unlisted procedure, nose) with comparison code 31295^[10]
• Incorrect: 30520
• Rationale: Code 30520 requires incisions into septal mucosa. Balloon-only approach requires unlisted code.^[10]

Example 7: Balloon Septoplasty with Incisions

Scenario: Surgeon makes incisions into septal mucosa, performs some resection, and also uses balloon dilation device. Coding:

• Correct: 30520 (Septoplasty or submucous resection)
• Rationale: Since incisions were made and resection performed, code 30520 is appropriate.^[10]

Example 8: Septoplasty with FESS

Scenario: Patient undergoes septoplasty and bilateral functional endoscopic sinus surgery for chronic sinusitis. Coding:

• 30520 (Septoplasty)
• Appropriate FESS codes (e.g., 31254, 31255, 31256, 31267, 31276, 31287, 31288) with modifier 51^[2]
• J34.2 (Deviated nasal septum)
• J32.9 (Chronic sinusitis)^[2]
• Rationale: Septoplasty and FESS are distinct procedures performed for different indications.^[2]

Example 9: Septoplasty with Obstructive Sleep Apnea

Scenario: Patient with documented obstructive sleep apnea (G47.33) and nasal obstruction due to deviated septum undergoes septoplasty as part of comprehensive airway surgery. Coding:

• 30520 (Septoplasty)
• G47.33 (Obstructive sleep apnea)^[2]
• Rationale: Sleep apnea may be coded as comorbidity; document relationship to nasal obstruction.^[2]

⚠️ Important Coding Notes

Bilateral Surgery Indicator^[10]

• 30520 has a bilateral surgery indicator of “0”
• 150% payment adjustment does NOT apply
• Do not use modifiers -50, -LT, or -RT^[10]

Traditional Septoplasty vs. Balloon Septoplasty^[10]

Procedure	Incisions?	Code
Traditional septoplasty	Yes	30520[10]
Balloon dilation without incisions	No	30999 + comparison code[10]
Balloon dilation with incisions	Yes	30520[10]

Turbinate Procedures - Bundling History^[9]

• Pre-2006: 30930 was “any turbinate” and bundled with septoplasty^[9]
• Post-2006: 30930 is specific to inferior turbinate only and is not bundled^[9]
• Appeal Strategy: If payer denies, reference 2006 CPT descriptor change^[9]
• Last Resort: Add modifier -59 if appeal fails^[9]

Medical Necessity for Medicare^[1]

• Document failed conservative therapy (e.g., nasal steroids for 4-6 weeks)
• Document symptoms (nasal obstruction, difficulty breathing)
• Document findings (degree of deviation, location)
• Verify with local MAC for any specific coverage requirements^[1]

Global Period^[1]

• 30520 has a 90-day global period
• All routine post-operative care is included
• Complications requiring return to OR may be billed with modifier 78^[1]
• Unrelated procedures during the global period may be billed with modifier 79^[1]

🔗 Related Codes

Septoplasty and Rhinoplasty Codes^[5][6]

Code	Description
30400	Rhinoplasty, primary; lateral and alar cartilages and/or elevation of nasal tip[6]
30410	Rhinoplasty, primary; complete
30420	Rhinoplasty, primary; including major septal repair[5][6]
30430	Rhinoplasty, secondary; minor revision
30435	Rhinoplasty, secondary; intermediate revision
30450	Rhinoplasty, secondary; major revision
30460	Rhinoplasty for nasal deformity secondary to congenital cleft lip and/or palate
30462	Rhinoplasty for nasal deformity secondary to congenital cleft lip and/or palate
30465	Repair of nasal vestibular stenosis (e.g., spreader grafting, lateral nasal wall reconstruction)[5][6]

Turbinate Procedures^[9]

Code	Description
30930	Fracture nasal inferior turbinate(s), therapeutic[9]
30801	Cautery and/or ablation, mucosa of inferior turbinates; superficial
30802	Cautery and/or ablation, mucosa of inferior turbinates; intramural

Sinus Surgery Codes^[2]

Code	Description
31253	FESS, ethmoidectomy
31254	Nasal/sinus endoscopy, surgical, with ethmoidectomy; partial (anterior)[2]
31255	Nasal/sinus endoscopy, surgical, with ethmoidectomy; total (anterior and posterior)[2]
31256	Nasal/sinus endoscopy, surgical, with maxillary antrostomy[2]
31267	Nasal/sinus endoscopy, surgical, with maxillary antrostomy; with removal of tissue[2]
31276	Nasal/sinus endoscopy, surgical, with frontal sinus exploration[2]
31287	Nasal/sinus endoscopy, surgical, with sphenoidotomy[2]
31288	Nasal/sinus endoscopy, surgical, with sphenoidotomy; with removal of tissue[2]

Sleep Apnea Codes^[2]

Code	Description
64582	Hypoglossal nerve stimulator (e.g., for OSA)[2]
42145	Uvulopalatopharyngoplasty[2]
94660	Continuous positive airway pressure initiation and management[2]

Graft Codes^[5][6]

Code	Description
20912	Cartilage graft; nasal septum[5][6]
20900	Cartilage graft; rib, autogenous
20902	Cartilage graft; rib, homologous
21235	Graft; ear cartilage, autogenous

Unlisted Codes^[10]

Code	Description
30999	Unlisted procedure, nose[10]
21299	Unlisted craniofacial and maxillofacial procedure

References

¹ MD Clarity. “CPT Code 30520: What It Is, Modifiers, Reimbursement.” (2026) ² NIH/NCBI. “Table 1. Diagnosis and CPT Codes.” (2024) ³ Bristol Healthcare Services. “CPT® 2026 Overhaul.” (2026) ⁴ AAPC Forum. “HOW TO BILL FOR A CERTIFIED NURSE PRACTITIONER SURGICAL ASSIST.” (2025) ⁵ NIH/NCBI. “Table 6. Management and Coding: Patient case scenarios.” (2018) ⁶ NIH/NCBI. “Table 7. Current Procedural Terminology (CPT) Code Definitions.” (2018) ⁷ emedcodes.com. “09SM0ZZ - Reposition Nasal Septum, Open Approach.” (2026) ⁸ MedLearn Publishing. “Peripheral & Cardiology Coder - 2026 Edition.” (2026) ⁹ AAPC. “Unbundle Inferior Turbinates From Septoplasty : READER QUESTIONS.” (2010) ¹⁰ AAPC. “Get the Full Scoop on Septoplasty Procedures Involving Balloon Dilation.” (2020)