CPT 24066Surgery

Biopsy arm/elbow soft tissue

CPT code 24066 covers a surgical biopsy of soft tissue in the arm or elbow area, where a doctor removes a tissue sample to test for disease, cancer, or other conditions. This is a more extensive biopsy than a simple needle sample and requires surgical incision.

Showing rates for

National Average

Base Medicare rate

$616.85

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

5.35

PE RVU (NF)

12.56

MP RVU

1.16

Total RVU

19.07

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

NCCI bundling edits

Loading bundling edits…

Billing tips

Always verify place of service code matches actual location - POS 22 (outpatient hospital) triggers facility rate ($423.74) while POS 11 (office) triggers non-facility rate ($616.85)
Impact: Incorrect POS coding results in $193.11 payment difference and potential recoupment
Document depth and complexity of biopsy clearly - superficial biopsies may be downcoded to 11102-11107 series (skin/subcutaneous) which reimburse significantly less
Impact: Proper documentation prevents downcoding from $616.85 to approximately $200-300 for skin biopsy codes
Link appropriate ICD-10 diagnosis codes indicating medical necessity such as D48.1 (neoplasm uncertain behavior soft tissue arm), M79.89 (soft tissue disorder), or R22.31 (localized swelling arm)
Impact: Medical necessity denials account for 30-40% of rejections; proper diagnosis linkage reduces appeal time and improves first-pass payment
When performed with imaging guidance, bill ultrasound guidance (76942) or CT guidance (77012) separately - these are not bundled with 24066
Impact: Additional $150-250 reimbursement for imaging guidance when documented and medically necessary
Ensure pathology interpretation (88305 or higher) is billed separately by pathologist - this is not included in surgical code reimbursement
Impact: Pathology adds $100-400 to total case reimbursement but must be billed by pathology department separately
For Medicare patients, verify biopsy is not being performed within global period of recent arm/elbow surgery unless using appropriate modifier 78 or 79
Global period violations result in 100% denials; proper modifier use recovers 70-100% of payment

Live Field Datano reports yet

Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.

Working with CPT 24066?

Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.

Help build the field knowledge

MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.

Related actions

Frequently asked questions

What is the Medicare reimbursement rate for CPT 24066 in 2025?

The 2025 Medicare national average reimbursement for CPT 24066 is $616.85 in non-facility settings (office) and $423.74 in facility settings (hospital outpatient/ASC). Actual payment may vary based on geographic location and MAC-specific adjustments.

What is the difference between CPT 24066 and skin biopsy codes?

CPT 24066 is for deep soft tissue biopsies involving muscle, fascia, or deep structures requiring surgical incision and layered closure. Skin biopsy codes (11102-11107) are for superficial biopsies limited to epidermis, dermis, or subcutaneous tissue. The depth of dissection and tissue sampled determines correct code selection, with 24066 reimbursing significantly higher.

Can CPT 24066 be billed with an E/M service on the same day?

Yes, but only with modifier 25 appended to the E/M code if a significant, separately identifiable evaluation was performed beyond the usual pre-procedure assessment. Documentation must clearly show the E/M service addressed issues separate from the biopsy decision or involved comprehensive evaluation warranting distinct payment.

How many RVUs is CPT code 24066 worth?

CPT 24066 has 19.07 total RVUs for 2025, consisting of 5.35 work RVUs, 12.56 non-facility practice expense RVUs (6.59 facility PE RVUs), and 1.16 malpractice RVUs. These values are from the CMS Physician Fee Schedule RVU25A released December 2024.

Does CPT 24066 require prior authorization?

Prior authorization requirements vary by payer. Many commercial insurers and Medicare Advantage plans require pre-authorization for surgical biopsies, especially in outpatient settings. Always verify specific payer requirements before scheduling. Original Medicare typically does not require prior authorization but does require medical necessity documentation.

What diagnosis codes support medical necessity for CPT 24066?

Common supporting diagnoses include D48.1 (neoplasm of uncertain behavior of connective tissue arm), C49.11-C49.12 (malignant neoplasm soft tissue arm), D21.11-D21.12 (benign neoplasm soft tissue arm), R22.31-R22.32 (localized swelling arm), and M79.89 (other soft tissue disorders). Always document clinical findings and imaging results supporting biopsy indication.

Can CPT 24066 be billed bilaterally?

Yes, if bilateral arm/elbow biopsies are performed during the same session, bill with modifier 50 for bilateral procedure. Most payers reimburse at 150% of the single procedure rate. Alternatively, some payers prefer separate line items with LT and RT modifiers. Verify payer-specific bilateral billing requirements before submitting.