CPT code 23474 – Revision total shoulder arthroplasty

Key takeaways

CPT code 23474 covers revision of a total shoulder arthroplasty when both the humeral and the glenoid component are revised, including allograft when performed.

Its sister code 23473 covers the same revision when only one component, humeral or glenoid, is revised. The component count is the whole distinction.

CPT 23472 is the primary total shoulder arthroplasty, not a revision code, so it never competes with 23474 on a revision claim.

23474 carries 26.53 work RVUs and a 90-day global period, so routine follow-up is bundled and unrelated E&M visits need modifier 24.

Pabau, the practice management platform we build, turns the invoice into a claim and tracks it through Claim.MD. The billed code then matches the operative note.

CPT code 23474 covers revision of both shoulder components

CPT code 23474 reports revision of a failed total shoulder arthroplasty. It applies when the surgeon revises both the humeral and the glenoid component in the same session. Allograft is included when it is performed, so it is not billed on its own line.

Common reasons for revision include component loosening, instability, periprosthetic infection, mechanical failure, and wear. The procedure is a major surgical service on the Medicare Physician Fee Schedule (MPFS). The American Medical Association (AMA) publishes the official descriptor below.

A typical revision runs in four phases. The surgeon removes the failed components and manages the bone bed, including cement removal and grafting. Trial components come next, then final implant insertion and stability testing. The bundled work includes:

• Removal of the existing humeral and glenoid components
• Preparation of the glenoid vault and the humeral canal
• Allograft or bone cement, where documented
• Insertion and fixation of the revision components
• Wound closure and post-operative stabilization

23473 vs 23474: The component count decides the code

The coding decision on a revision shoulder claim is 23473 against 23474. Both codes share the same descriptor up to the semicolon. The only difference is whether one component or both were revised.

The operative report must name each component that was removed and replaced. If the glenoid component stays in place and only the humeral side is revised, 23473 is correct. The same applies when only the glenoid is revised.

When both components are exchanged, 23474 applies. Never choose between the two codes on operative time or difficulty alone. Extra work beyond the typical case belongs to modifier 22, not to a code change.

What CPT 23474 includes and excludes

Bundling rules on a revision shoulder claim decide what goes on the claim and what stays off it. The table below summarizes what is included and what may be reported separately.

Related shoulder arthroplasty CPT codes

23474 sits in a small family of shoulder arthroplasty codes. Two cover primary surgery and two cover revision, so the first question is whether a prosthesis is already in place.

Because 23472 describes a first-time replacement, it has no place on a revision claim. A revision is coded 23473 or 23474, depending on how many components the surgeon exchanged. The decision path below puts both questions in the order a coder asks them.

ICD-10 codes used with CPT 23474

The diagnoses that support 23474 come mainly from ICD-10-CM category T84, complications of internal orthopedic prosthetic devices. ICD-10-CM has no shoulder-specific T84 codes, so a shoulder prosthesis is reported under the “other” joint subcodes.

The 7th character matters. Use A for the initial encounter, D for subsequent encounters, and S for sequela. Because the T84 codes carry no side, report laterality on the CPT line with modifier RT or LT.

Verify each selection against the CDC/NCHS ICD-10-CM browser tool for the current fiscal year before billing. A non-specific shoulder pain code should never be the primary diagnosis on a revision claim.

Modifiers for CPT 23474

Modifier choice on a 23474 claim affects both payment and audit risk. The table below covers the modifiers that apply most often to revision shoulder arthroplasty.

Medicare reimbursement and RVUs for CPT 23474

Medicare pays CPT code 23474 through the MPFS. Relative Value Units are multiplied by the annual conversion factor, then adjusted by Geographic Practice Cost Indices for your locality. Check current figures in the CMS Physician Fee Schedule Look-Up Tool before quoting a rate.

The FastRVU 2026 RVU lookup tool shows work, practice expense, and malpractice RVUs for 23474 in one view. Multiply the total RVU by the annual conversion factor to estimate the national payment before geographic adjustment.

Global period and post-operative care for CPT 23474

CPT code 23474 carries a 90-day global surgical period. Routine post-operative care by the operating surgeon, from the day of surgery through day 90, is bundled into the procedure payment.

What is bundled during the global period:

• Wound checks and staple or suture removal
• Routine post-operative office visits related to the revision
• Coordination of physical therapy referrals, though not the therapy itself
• Standard post-operative X-rays that check component position

What may be billed separately during the global period:

• E&M visits for unrelated conditions, with modifier 24 and the unrelated diagnosis documented
• An unplanned return to the operating room for a related complication, with modifier 78
• Services by a different surgeon outside the operating surgeon’s group

Documentation requirements for CPT code 23474

Revision claims draw closer payer review than primary arthroplasty claims. The record has to prove that the prosthesis failed and that both components were revised.

• Pre-operative imaging: X-ray, CT, or MRI showing prosthetic failure, such as loosening, wear, instability, or osteolysis
• Primary implant history: The original implant type and the date of the primary arthroplasty
• Operative report: Each component removed and replaced, the condition of the glenoid vault, any allograft used, and the new implant type and size
• Implant records: The implant log or invoice, which many facility payers ask for
• Medical necessity narrative: A note from the surgeon explaining why revision was needed, with the supporting findings
• Prior authorization number: Included on the claim where the payer requires one

The operative report decides between 23473 and 23474, so it carries the most weight on the claim. “Shoulder replacement revised” is not enough. The report should name both components, the implant system, the explant technique, and the extent of bone loss.

Submitting a clean claim for a revision starts with a detailed operative report dictated on the day of surgery.

Prior authorization and payer requirements for CPT 23474

Prior authorization for CPT code 23474 varies by payer. Most commercial plans require it for revision shoulder arthroplasty, and Medicare Advantage plans may set their own rules. Confirm the requirement with each payer before you schedule surgery.

Typical commercial payer criteria for approval include:

• Radiographic evidence of component loosening, failure, or wear
• Clinical documentation of pain, instability, or functional limitation
• Conservative management tried and failed, where it applies
• Infection markers when periprosthetic infection is the indication, such as ESR, CRP, and joint aspiration results

For Original Medicare, check your MAC for any Local Coverage Determination that applies to shoulder arthroplasty. Pairing insurance eligibility verification with an authorization check before surgery prevents the costliest denials. Those are the ones where authorization was never obtained.

Common claim denial reasons for CPT 23474 and how to avoid them

Most denials on revision shoulder claims trace back to six fixable errors, listed in the table below. Denial management workflows that catch these before submission save weeks of rework.

When a 23474 claim is denied, start with the common denial codes on the remittance advice. Claim Adjustment Reason Codes 4, 5, 50, 96, and 197 are common on surgical claims. Each one points to a specific fix before you appeal.

How Pabau keeps 23474 revision claims accurate

In many practices, the component count makes two trips. The surgeon writes it into the operative note, and a biller later reads that note and picks between 23473 and 23474. Every ambiguous line becomes a judgment call days after surgery.

Pabau shortens that trip. Its claims management software builds each claim from the invoice you already raised. US practices check eligibility and send claims to thousands of payers through Claim.MD, Pabau’s US clearinghouse partner.

Claim statuses update from the payer, and electronic remittance advice comes back into Pabau against the claim it settles. Denied claims are flagged for rework, so a 23473 or 23474 correction is not lost in a portal. For wider context, see our guide to medical billing workflows.

Keep revision shoulder claims accurate

Pabau turns your invoices into insurance claims, checks eligibility through Claim.MD, and matches remittances back to each claim. The code on a 23474 claim stays tied to the record behind it.

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Conclusion

CPT code 23474 is easy to define and easy to misapply. Primary surgery codes such as 23472 never appear on a revision claim, so the only live decision is how many components the surgeon exchanged.

Make the operative report answer that question in plain words, and the code follows. Leave it vague, and you either underbill a full revision as 23473 or invite a downcode on 23474. The other costly denial is a missing prior authorization, so lock it in before the surgery date.

Book a demo to see how Pabau carries revision shoulder claims from invoice to remittance for orthopedic practices.

Continue your research

Need a clearinghouse for orthopedic claims? Medical claims clearinghouse guide explains how clearinghouses route 837P claims and process ERA responses for surgical procedures.

Struggling with remittance reconciliation after revision surgery? Electronic remittance advice (ERA) covers how 835 transaction files work and how to match payments to claims automatically.

Want to reduce denials across your surgical claims? Claim.MD clearinghouse overview details the payer connections, real-time eligibility checks, and denial reporting available through Pabau’s US clearinghouse integration.

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