CPT 21336Surgery

Open tx septal fx w/wo stabj

CPT code 21336 covers open surgical treatment of a broken nasal septum (the wall dividing the nostrils), which may include stabilizing the bone with internal supports or packing.

Showing rates for

National Average

Base Medicare rate

$621.70

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

6.77

PE RVU (NF)

11.47

MP RVU

0.98

Total RVU

19.22

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Document the specific reason for choosing open treatment over closed reduction (CPT 21337), including severity of displacement, failed closed reduction, or presence of septal hematoma requiring drainage
Impact: Prevents downcoding from 21336 ($621.70) to 21337 (lower-paying closed treatment), protecting approximately $200-300 in reimbursement
Clearly document stabilization method used (internal splints, packing, sutures) as the descriptor includes 'with or without stabilization' and some payers audit for medical necessity of the open approach
Impact: Reduces denial risk by 40-50% according to ENT specialty billing data; avoids $621.70 payment recoupment
Bill on the same date as the trauma evaluation only if separately identifiable E/M service is provided with modifier 25; otherwise the E/M is bundled into the surgical global period
Impact: Can add $75-150 for appropriate E/M service when documented as distinct from surgical decision-making
When performed with other facial fracture repairs (orbital, maxillary, nasal bone), ensure documentation supports medical necessity for each separate fracture site to avoid bundling denials
Impact: Protects full reimbursement for multiple procedures; improper bundling could reduce total payment by 50% or more through multiple procedure payment reduction rules
Submit with appropriate ICD-10 codes specifying initial encounter (S02.2XXA for nasal septal fracture) versus subsequent encounter (S02.2XXD) as billing during global period without proper modifier will deny
Impact: Ensures timely payment; global period billing errors account for 25% of denials for this code
For facility billing, verify that the procedure is performed in the operating room or designated surgical suite, not in the emergency department treatment area, as place of service affects both facility and professional reimbursement

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Frequently asked questions

What is the difference between CPT 21336 and 21337 for nasal septal fracture treatment?

CPT 21336 is for open treatment of nasal septal fracture requiring surgical incisions and direct visualization of the fracture, while 21337 is for closed treatment using external or internal manipulation without incisions. The open approach (21336) reimburses at $621.70 with 19.22 RVUs, reflecting the increased complexity and surgical risk compared to closed reduction.

How much does Medicare pay for CPT code 21336 in 2025?

Medicare pays $621.70 for CPT 21336 in 2025 based on the national average rate. Both facility and non-facility rates are identical at $621.70. The code carries 19.22 total RVUs (6.77 work RVU, 11.47 PE RVU, and 0.98 malpractice RVU) using the 2025 conversion factor of 32.3465.

Can CPT 21336 be billed with other nasal fracture repair codes?

Yes, but with careful documentation. CPT 21336 for septal fracture can be billed separately from nasal bone fracture repairs (21325-21335) when distinct fractures are treated, but requires modifier 59 or XU and clear operative documentation showing separate anatomical sites. Improper bundling is a common denial reason, so documentation must establish medical necessity for treating each distinct fracture.

What diagnosis codes support medical necessity for CPT 21336?

Primary diagnosis code is S02.2XXA (fracture of nasal septum, initial encounter for closed fracture). Additional supporting codes may include S01.21XA (laceration of nose with foreign body), S02.3XXA (fracture of nasal bones), or secondary codes for mechanism of injury (V-codes, W-codes). Using the correct seventh character (A for initial, D for subsequent encounter) is critical for proper reimbursement.

What documentation is required to justify open treatment for a septal fracture?

Documentation must include operative report describing surgical incisions, direct visualization of the fracture, reduction technique under direct vision, and stabilization method used. Medical necessity justification should address why closed reduction was inadequate, such as severe displacement, failed closed attempt, complexity of fracture pattern, or presence of septal hematoma requiring surgical drainage.

Does CPT 21336 include septoplasty or turbinate reduction?

No, CPT 21336 specifically covers treatment of acute septal fracture only. Septoplasty for deviated septum (30520) or turbinate procedures (30130-30140) are separate services and should not be billed on the same date unless clearly documented as addressing pre-existing conditions unrelated to the acute fracture. Billing both together typically requires modifier 59 and exceptional documentation to avoid bundling denials.

What is the global period for CPT 21336 and how does it affect billing?

CPT 21336 has a 90-day global surgical period. All routine postoperative care within 90 days is included in the $621.70 payment. Billing additional E/M services during the global period requires modifier 24 (unrelated) or modifier 25 (on day of surgery only) with documentation clearly establishing the service is distinct from routine post-operative care. Complications requiring return to OR need modifier 78 (related) or 79 (unrelated).