CPT 21825Surgery

Treat sternum fracture

CPT code 21825 covers the medical treatment of a broken breastbone (sternum), typically through non-surgical methods like stabilization and pain management. This code is used when a healthcare provider treats a sternal fracture without performing open surgery.

Showing rates for

National Average

Base Medicare rate

$543.74

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

7.76

PE RVU (NF)

7.25

MP RVU

1.8

Total RVU

16.81

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

NCCI bundling edits

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Billing tips

Document the specific treatment method used (closed reduction, immobilization device type, stabilization technique) as vague documentation of 'observation only' may trigger downcoding or denial
Impact: Prevents potential denial or reduction from $543.74 to evaluation/management code levels ($100-200 range), preserving approximately $350-450 in reimbursement
When sternum fracture occurs with rib fractures, bill both CPT 21825 and appropriate rib fracture codes (21800-21811) with modifier 59 to indicate separate fracture sites requiring independent treatment
Impact: Can add $300-800 in additional reimbursement for multiple fracture treatments when properly documented and coded
Verify fracture diagnosis with imaging documentation (CT scan preferred over plain radiographs) and reference specific imaging findings in procedure note to support medical necessity
Impact: Reduces denial rate by approximately 40-60% based on clear radiographic correlation with treatment rendered
For trauma cases, ensure mechanism of injury is documented along with evaluation for associated injuries (cardiac contusion, pneumothorax, hemothorax) even if treated separately, as this supports complexity and medical necessity
Impact: Strengthens justification for modifier 22 when applicable, potentially increasing reimbursement by $100-270
Submit claims within 72 hours of service when patient is admitted for observation or inpatient care, as delayed billing may result in bundling with admission services
Impact: Prevents bundling into DRG payment or admission E/M, preserving full $543.74 professional fee
For displaced fractures requiring manipulation, document pre-manipulation and post-manipulation positioning/alignment to demonstrate active treatment versus observation alone

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 21825 in 2025?

The 2025 Medicare national average reimbursement for CPT 21825 is $543.74 for both facility and non-facility settings. This rate is based on a total RVU of 16.81 multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary based on geographic location and applicable Geographic Practice Cost Indices (GPCI).

Can CPT 21825 be billed with an E/M code on the same date of service?

Yes, CPT 21825 can be billed with an evaluation and management code on the same date when the E/M represents a significant, separately identifiable service beyond the usual pre-procedure and post-procedure work. Append modifier 25 to the E/M code and ensure documentation clearly distinguishes the evaluation service from the fracture treatment procedure. This commonly occurs in emergency department settings where initial trauma evaluation precedes definitive fracture treatment.

How does CPT 21825 differ from open surgical treatment of sternal fractures?

CPT 21825 represents closed treatment of sternal fractures without surgical incision or internal fixation, involving conservative management such as immobilization and pain control. Open surgical treatment with internal fixation would be coded with CPT 21825's surgical counterpart codes (21820 for closed treatment with manipulation, or higher-level codes for open procedures). The distinction is critical as open procedures carry significantly higher RVU values and reimbursement rates.

What documentation is required to support medical necessity for CPT 21825?

Essential documentation includes radiographic confirmation of the sternal fracture (preferably CT imaging), mechanism of injury, detailed description of the treatment intervention performed (not just observation), clinical assessment of fracture characteristics and stability, the specific immobilization or stabilization method used, and medical decision-making supporting the treatment approach chosen. Documentation must demonstrate active treatment intervention to differentiate from simple observation or evaluation-only encounters.

Can CPT 21825 be billed for multiple sternal fractures?

No, CPT 21825 should be reported only once per encounter regardless of the number of sternal fracture fragments or sites, as the code descriptor covers treatment of the sternum as a single anatomical unit. Multiple fractures of the sternum are captured through ICD-10 diagnosis coding specificity rather than multiple procedure code units. However, if treating both sternal and rib fractures, separate codes for each anatomical site are appropriate with modifier 59.

What is the global period for CPT 21825?

CPT 21825 carries a 90-day global surgical period, meaning the base reimbursement of $543.74 includes all routine postoperative care for 90 days following the procedure. Separate billing during this period is only appropriate for complications, unrelated conditions, or services explicitly excluded from the global package. Procedures requiring return to treatment area (modifier 78) or unrelated procedures during the global period (modifier 79) require specific modifier use for payment.

Which medical specialties most commonly bill CPT 21825?

CPT 21825 is most frequently billed by trauma surgeons, orthopedic surgeons, thoracic surgeons, and emergency medicine physicians who manage acute chest trauma. The code is typically used in emergency department and trauma center settings where blunt chest trauma patients present. General surgeons may also bill this code when managing sternal fractures as part of comprehensive trauma care. Proper credentialing and privileges for fracture management are required regardless of specialty.