CPT 23000Surgery

Removal of calcium deposits

CPT code 23000 covers the surgical removal of calcium deposits that have built up in the shoulder joint or surrounding tissues. This procedure addresses painful calcific deposits that limit shoulder movement and don't respond to conservative treatment.

Showing rates for

National Average

Base Medicare rate

$540.83

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

4.48

PE RVU (NF)

11.48

MP RVU

0.76

Total RVU

16.72

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

NCCI bundling edits

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Billing tips

Verify facility vs. non-facility status before billing to ensure correct rate submission
Impact: Incorrect place of service coding creates $184.05 payment differential and may trigger audits or recoupment actions
Document the exact anatomic location and size of calcium deposits removed with preoperative imaging correlation
Impact: Lack of radiographic confirmation is the #1 denial reason; proper documentation prevents 15-25% of claim denials
Always append laterality modifier (LT/RT) as this is a paired anatomic structure
Impact: Missing laterality modifier results in automatic claim rejection requiring resubmission and 15-30 day payment delay
Do not bill 23000 with arthroscopic shoulder procedures (29820-29828) performed at same site
Impact: CCI edits bundle these services; inappropriate billing triggers NCCI denials and potential OIG audit flags
When billing with modifier 22, submit operative report with claim showing deposits were extensive, densely adherent, or required significantly longer operative time
Impact: Successful modifier 22 appeals can increase reimbursement by $108-$270 but require immediate supporting documentation
Confirm diagnosis code specificity with M75.3 (calcific tendinitis of shoulder) and laterality to support medical necessity
Impact: Generic shoulder pain codes (M25.51x) result in 30-40% higher denial rates for this procedure

Common denials

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 23000 in 2025?

The 2025 Medicare national average payment for CPT 23000 is $540.83 for non-facility settings and $356.78 for facility settings. These rates are based on 16.72 total RVUs (4.48 work RVU, 11.48 non-facility PE RVU, 5.79 facility PE RVU, and 0.76 MP RVU) multiplied by the 2025 conversion factor of 32.3465.

What is the difference between CPT 23000 and arthroscopic calcium deposit removal?

CPT 23000 describes open surgical removal of calcium deposits through a direct incision, while arthroscopic removal uses small incisions with camera guidance and is coded differently (typically 29999 or unlisted arthroscopic procedure). The approach must be clearly documented in the operative report, as open procedures typically justify higher reimbursement but arthroscopic approaches may have faster recovery times.

How much conservative treatment is required before billing CPT 23000?

Most payers require documentation of 3-6 months of failed conservative treatment before approving surgical removal of calcium deposits. This should include physical therapy, NSAIDs, activity modification, and often at least one corticosteroid injection attempt. Documentation of progressive symptoms despite conservative care is essential for medical necessity justification.

Can CPT 23000 be billed bilaterally with modifier 50?

Yes, CPT 23000 can be billed with modifier 50 if calcium deposits are removed from both shoulders during the same operative session. However, bilateral shoulder surgery in one session is uncommon due to postoperative rehabilitation needs. Medicare typically pays 150% of the unilateral allowable for bilateral procedures, not the full 200%.

What imaging is required to support medical necessity for CPT 23000?

Preoperative imaging confirming calcium deposits is essential for medical necessity. Plain X-rays are most common and often sufficient, showing radio-opaque deposits in the shoulder. Ultrasound can identify deposits and is increasingly used. MRI may show deposits as low-signal areas but is less specific. The radiology report should specifically document calcific deposits with location and approximate size.

What ICD-10 codes are appropriate for billing CPT 23000?

The primary diagnosis code is M75.3 (calcific tendinitis of shoulder) with appropriate laterality (M75.31 for right, M75.32 for left, M75.30 for unspecified). Secondary codes may include M25.51x (pain in shoulder), M75.1x (rotator cuff syndrome), or M25.61x (stiffness of shoulder) to support symptom severity. Using non-specific shoulder pain codes without M75.3 significantly increases denial risk.

How does place of service affect CPT 23000 reimbursement?

Place of service dramatically impacts payment for CPT 23000. Non-facility settings (office-based surgery centers with full overhead) receive $540.83, while facility settings (hospital outpatient departments, ASCs where facility bills separately) receive $356.78, a difference of $184.05. This reflects different practice expense RVUs: 11.48 for non-facility versus 5.79 for facility settings.