CPT 78300Radiology

Bone imaging limited area

CPT 78300 covers nuclear medicine bone scans of a limited area of the body, such as a single bone or joint. This diagnostic imaging test uses small amounts of radioactive material to detect bone abnormalities like fractures, infections, or cancer.

Showing rates for

National Average

Base Medicare rate

$196.67

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

0.62

PE RVU (NF)

5.4

MP RVU

0.06

Total RVU

6.08

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

NCCI bundling edits

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Billing tips

Clearly document the specific anatomical area imaged and medical necessity for limiting the scan to that region rather than performing complete skeletal imaging (78306)
Impact: Prevents upcoding/downcoding denials and audit flags; maintains full $196.67 reimbursement versus risk of complete denial
Separate professional and technical components (modifiers 26/TC) when services are split between interpreting physician and imaging facility
Impact: Ensures both entities receive appropriate payment; prevents duplicate billing denials that could forfeit entire $196.67
Include radiopharmaceutical administration details (dose, time of injection, imaging delay time) in documentation to support medical necessity
Impact: Strengthens claim against medical necessity denials which account for 20-30% of nuclear medicine procedure denials
When billing same-day with other imaging studies, append modifier 59 only when truly distinct and document separate medical necessity
Impact: Appropriate use captures additional $196.67; inappropriate use triggers audit with potential recovery of all payments plus penalties
Verify pre-authorization requirements for commercial payers as many require prior approval for nuclear medicine bone scans
Impact: Prevents denial of entire claim; pre-auth denials have low appeal success rate (under 20%)
Bill on day of imaging, not day of radiopharmaceutical injection if different, as the procedure date is when images are acquired and interpreted
Impact: Ensures accurate date of service for timely filing; prevents 5-10% claim denials due to incorrect DOS

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 78300 in 2025?

The 2025 Medicare national average reimbursement for CPT 78300 is $196.67 for both facility and non-facility settings. This rate is based on 6.08 total RVUs multiplied by the 2025 conversion factor of 32.3465.

What is the difference between CPT 78300 and 78306?

CPT 78300 is for bone imaging of a limited area (such as a single extremity or specific joint), while 78306 covers a complete whole-body bone scan. The limited scan (78300) reimburses at $196.67, while the complete study (78306) has higher reimbursement due to more extensive imaging. Documentation must clearly support the limited nature of the study to bill 78300.

How many RVUs is CPT code 78300 worth?

CPT 78300 has 6.08 total RVUs in 2025, consisting of 0.62 work RVUs, 5.4 practice expense RVUs (both facility and non-facility), and 0.06 malpractice RVUs. The work RVUs reflect the relatively low physician effort for limited bone imaging interpretation.

Can CPT 78300 be billed with modifier 26 or TC?

Yes, CPT 78300 can be split using modifier 26 for the professional component (physician interpretation) or modifier TC for the technical component (equipment, radiopharmaceutical, staff). This is common when the interpreting physician is separate from the facility providing the imaging equipment and technical services.

What diagnosis codes are commonly used with CPT 78300?

Common ICD-10 codes include M25.50-M25.579 (joint pain), M84.30-M84.48 (stress fractures), M86.00-M86.9 (osteomyelitis), M87.00-M87.9 (avascular necrosis), and C79.51 (bone metastases). The diagnosis must support medical necessity for limiting the bone scan to a specific anatomical area.

Does CPT 78300 require prior authorization?

Medicare typically does not require prior authorization for 78300, but many Medicare Advantage and commercial payers do require pre-authorization for nuclear medicine bone scans. Always verify payer-specific requirements before scheduling, as lack of authorization is a common denial reason that is difficult to successfully appeal.

Can CPT 78300 and 78306 be billed together on the same date?

No, CPT 78300 (limited bone imaging) and 78306 (complete bone scan) should not be billed together for the same patient on the same date, as 78300 is bundled into the more comprehensive 78306. Bill only the code that accurately represents the full extent of imaging performed. Billing both codes together will result in denial of the limited scan or potential audit for unbundling.