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Billing Codes

CPT code 24340: Tenodesis of the biceps tendon at the elbow

Avatar photo Maja Popovska
Last Updated: August 18, 2026
Key takeaways

Key takeaways

CPT code 24340 covers tenodesis of the biceps tendon at the elbow, performed as a separate procedure.

CPT 24342 covers a completely ruptured tendon, while 24340 covers one that is intact or partially torn.

The separate procedure designation means 24340 should not be billed alongside a more comprehensive elbow procedure without modifier support.

Common modifiers include -LT and -RT for laterality, -51 for multiple procedures, and -59 when NCCI edits apply.

Practice management software like Pabau links the operative note to claim generation, cutting manual CPT and ICD-10 transcription errors.

CPT code 24340 is the procedure code for tenodesis of the biceps tendon at the elbow, performed as a separate procedure. The official AMA descriptor reads: Tenodesis of biceps tendon at elbow (separate procedure).

The code sits in the CPT musculoskeletal system chapter. Its subsection covers repair, revision, and reconstruction of the humerus and elbow, spanning 24300 to 24498. Tenodesis stabilizes the biceps tendon by anchoring it to bone or adjacent tissue.

It does not fully reattach a ruptured end, which is what separates it from reinsertion procedures. The separate procedure designation is part of the official descriptor and carries the billing consequences covered below. For orthopedic teams handling sports medicine billing, 24340 is one of the foundational elbow repair codes to track.

Clinical indications for CPT 24340

Payers expect the operative note to support tenodesis rather than reinsertion. These are the diagnoses that most often justify CPT code 24340:

  • Partial biceps tendon tear at the elbow with persistent instability that has not responded to conservative management
  • Degenerative tendinopathy of the distal biceps tendon causing pain and functional limitation
  • Biceps tendon instability or subluxation at the elbow joint
  • Failed conservative treatment, including physical therapy and a steroid injection billed under CPT 20550
  • Intraoperative finding of tendon degeneration that needs stabilization during a related elbow procedure

Document each indication in the pre-operative assessment and confirm it in the operative report. Vague language like “elbow pain” or “tendon pathology” without a linked diagnosis code raises denial risk sharply.

Which modifiers apply to CPT 24340

A laterality modifier applies to every unilateral 24340 claim, with -51 or -59 on top where the encounter calls for it. Modifier choice depends on how many procedures were performed and whether NCCI bundling edits are triggered. The wrong modifier, or a missing one, is a primary cause of rejection for this code.

Modifier Description When to apply with CPT 24340
-RT / -LT Right side / Left side Always required when the procedure is unilateral. Append it to identify the operative extremity.
-51 Multiple procedures Append when 24340 is the secondary procedure in a same-session claim. It reduces payment by 50%.
-59 Distinct procedural service Use when an NCCI edit bundles 24340 with another code but the procedures were genuinely distinct. The note must document the different site, session, or indication.
-80 Assistant surgeon Append to the assisting surgeon’s claim when two surgeons take part. Check payer policy first, as Medicare sets its own assistant surgeon rules.
-62 Two surgeons Use when surgeons of different specialties each perform a distinct portion of the procedure. Each one bills -62 and receives 62.5% of the fee schedule rate.

The Office of Inspector General (OIG) treats incorrect modifier -59 usage as a high-audit-risk area. Only apply -59 when the procedures are genuinely distinct and the operative note explains the basis for that distinction. The AAPC Codify platform provides current NCCI edit pair lookups, so you can check -59 before the claim goes out.

ICD-10 codes used with CPT code 24340

Every 24340 claim needs a linked ICD-10-CM diagnosis code that supports medical necessity. Payers read that code to confirm tenodesis was the clinically appropriate procedure. The codes below are the ones most often paired with a 24340 claim. Check current-year validity with the CMS Physician Fee Schedule before submitting.

ICD-10-CM Code Description Laterality notes
S46.211A Strain of muscle, fascia and tendon of other parts of biceps, right arm, initial encounter Supports a partial distal biceps tear treated by tenodesis. Pair with -RT.
S46.212A Strain of muscle, fascia and tendon of other parts of biceps, left arm, initial encounter Left-sided equivalent of the code above. Pair with -LT.
M66.221 Spontaneous rupture of extensor tendons, right upper arm The M66.2 series codes to upper arm, not elbow. Pair with -RT.
M66.222 Spontaneous rupture of extensor tendons, left upper arm Left-sided equivalent. Pair with -LT.
M75.21 Bicipital tendinitis, right shoulder Shoulder-level code. Use only when the pathology extends to the elbow, and document that clearly.
S52.001A Unspecified fracture of upper end of right ulna, initial encounter for closed fracture Right-sided only. Use S52.002A for the left ulna when tenodesis accompanies fracture fixation.

If the operative note describes a different biceps injury pattern, check the neighboring codes in the S46 series, such as S46.191A. The M77.2 series is a common mis-pick here, because those codes describe the wrist rather than the elbow.

Use CrossCoder to verify current crosswalk pairings. It also shows whether your diagnosis code carries an active Local Coverage Determination (LCD) from your Medicare Administrative Contractor (MAC). Practice management software like Pabau keeps that link inside the encounter itself.

Its claims management tools let coders attach ICD-10 codes to CPT codes as the note is written. The pairing never has to be re-typed into a separate billing system.

Pabau checkout screen and completed insurer invoice
Pabau builds the insurer invoice at checkout, so the codes on the claim match what was recorded at the encounter.

Medicare reimbursement and RVU values for CPT 24340

Medicare pays CPT 24340 through the Physician Fee Schedule RVU methodology. The national rate is the total RVU multiplied by the annual conversion factor. A geographic practice cost index (GPCI) then adjusts that figure for your locality.

Payment also changes with the place of service, so a hospital case and an office case are not worth the same amount.

RVU breakdown for CPT 24340

The table below shows the components behind that payment. Use the FastRVU lookup tool to pull current-year values for your locality, since CMS updates the components and the conversion factor every year.

RVU Component Typical value (national) What it reflects
Work RVU (wRVU) Verify via CMS PFS lookup Physician time, skill, and intensity for the tenodesis procedure
Practice Expense RVU (PE RVU) Facility and non-facility rates differ Overhead costs, including equipment, supplies, and clinical staff
Malpractice RVU (MP RVU) Verify via CMS PFS lookup Professional liability insurance allocation for orthopedic surgery
Total RVU Sum of wRVU, PE RVU, and MP RVU Multiplied by the conversion factor and GPCI to produce the Medicare payment
Conversion Factor Updated annually by CMS Dollar multiplier applied to the total RVU. Verify the current-year figure with CMS.

Non-facility rates, which apply to office-based procedures, are typically higher than facility rates. The practice expense RVU covers overhead that a hospital or ASC absorbs itself in the facility setting.

Confirm which setting applies before you submit. Billing teams should also confirm locality-adjusted rates with their MAC before using national figures in a revenue projection.

Pro Tip

Run your CPT 24340 claims through a facility versus non-facility rate check before submission. If the procedure happened in a hospital or ASC, the lower facility PE RVU applies. Submitting the non-facility rate for a facility-based procedure triggers automatic downcoding, and the shortfall can take weeks to resolve.

CPT 24340 vs. CPT 24342: Key differences for coders

The most common miscoding error for elbow biceps procedures is swapping 24340 for 24342. Tenodesis (24340) stabilizes a tendon that is intact or partially torn. Reinsertion (24342) reattaches a tendon that has completely ruptured from its insertion.

Using 24342 for a tenodesis procedure, or the reverse, is an audit trigger the OIG has flagged in orthopedic billing reviews.

Factor CPT 24340 CPT 24342
Official descriptor Tenodesis of biceps tendon at elbow (separate procedure) Reinsertion of ruptured biceps or triceps tendon, distal
Clinical scenario Tendon is intact or partially torn, and the procedure stabilizes it to bone or tissue Tendon is completely ruptured and must be reattached to its bony insertion
Operative note requirement Must describe tendon continuity and the stabilization technique, such as a suture anchor, interference screw, or drill hole Must document complete rupture with proximal retraction and reattachment to the radial tuberosity
Separate procedure flag Yes, in the code descriptor No separate procedure flag
Typical ICD-10 pairing Partial rupture, instability, or degenerative tendinopathy codes Complete rupture codes from the S46.2 biceps injury series

When the operative report describes both stabilization and reattachment, code the primary procedure first. If the surgeon found a complete rupture and performed a reinsertion when tenodesis was planned, code what was actually done. Add a clinical note explaining the intraoperative finding.

Recording the pre-operative plan alongside that decision protects against a denial that challenges the code change. Practices keeping consent and assessment in digital intake records can link pre-operative forms to post-operative notes in one file, with no manual retrieval.

Pabau treatment note with anatomical site plotting
Pabau’s treatment notes record the anatomical site and the products used, which is the same detail a payer looks for.

CPT code 24340 belongs to a cluster of elbow repair and reconstruction codes. Knowing the neighbors helps you confirm code selection and spot valid combinations when several elbow procedures happen in one session. Soft-tissue codes for the same region, such as CPT 24076, can appear on the same operative claim.

CPT Code Descriptor Key distinction
24340 Tenodesis of biceps tendon at elbow (separate procedure) This article’s primary code, covering stabilization without full reattachment
24341 Repair, tendon or muscle, upper arm or elbow, each tendon or muscle Broader tendon and muscle repair, not limited to the biceps, with no separate procedure designation
24342 Reinsertion of ruptured biceps or triceps tendon, distal Complete rupture requiring reattachment, and higher complexity than 24340
24343 Repair of lateral collateral ligament, elbow, with local tissue Lateral ligament repair, a different anatomical structure from the biceps tendon
24344 Reconstruction of lateral collateral ligament, elbow, with tendon graft Graft-based reconstruction, more complex than a local tissue repair
24345 Repair of medial collateral ligament, elbow, with local tissue Medial ligament repair, distinct from lateral and biceps procedures
24346 Reconstruction of medial collateral ligament, elbow, with tendon graft The Tommy John equivalent, a graft-based medial stabilization

When several codes from this series are billed together, review the NCCI edits to confirm whether -51 or -59 is required. Automated workflow tools can flag multi-procedure encounters for coder review before submission, which catches unbundling risk upstream of the payer.

Automated patient communications queued against an appointment in Pabau
Pabau sends pre- and post-care instructions automatically and logs each one, so the follow-up plan is recorded against the encounter.

Billing guidelines and common coding errors for CPT code 24340

The separate procedure designation is the biggest compliance issue attached to this code. Under AMA CPT guidelines, a separate procedure should not be reported on its own. That holds when it forms part of a larger procedure at the same session and site.

The rule governs which codes you may report together, rather than the amount you get paid. Billing 24340 alongside a more comprehensive elbow reconstruction code, without documentation and modifier support, is unbundling. That is an OIG enforcement priority.

Three scenarios let you bill CPT code 24340 alongside other codes:

  • Different anatomical site: Tenodesis at the elbow billed alongside a shoulder or wrist procedure in the same session, supported by -59 or an XS modifier
  • Different operative session: The tenodesis was performed at a distinctly different time from the companion procedure, with separate operative notes
  • Distinct independent indication: The tenodesis addresses a condition unrelated to the primary procedure, with separate pre-operative diagnosis codes for each

Documentation requirements for CPT 24340

A defensible 24340 claim rests on what the operative note actually says. These elements belong in the record before the claim goes out:

  • Pre-operative diagnosis: A specific ICD-10-CM code, backed by imaging, physical examination findings, and records of failed conservative treatment
  • Procedure description: The technique used, whether that is suture anchor fixation, an interference screw, or a bone tunnel, plus the anatomical fixation site
  • Tendon integrity status: Confirmation that the tendon was intact or partially torn at surgery. This separates the case from a complete rupture, which is coded 24342
  • Separate procedure justification: Where 24340 is billed with other codes, a statement of why the tenodesis was a distinct service. Name the separate indication or site
  • Implant or fixation device used: The manufacturer, product name, and quantity of any anchor or device deployed. These may trigger separate HCPCS supply codes
  • Post-operative plan: The rehabilitation timeline and follow-up instructions, which demonstrate procedural completion and support the global period calculation

AI-assisted documentation lets surgeons structure the operative note during or straight after the procedure. The biller then works from the same detail the surgeon recorded, which removes the re-keying step where transcription errors creep in. Our guide to medical documentation covers form design, compliance, and workflow for surgical specialties.

Pabau Scribe drafting a treatment note from a recorded consultation
Pabau Scribe, our AI scribe, drafts the note from the recorded consultation, so operative detail reaches the biller unchanged.

Pro Tip

Before submitting any CPT 24340 claim that carries modifier -59, pull the NCCI edit pair table for 24340 and the companion code. Confirm the Column 1 and Column 2 relationship, then check whether the modifier is permitted at all (0 = not allowed, 1 = allowed with documentation). A -59 applied to an edit pair that does not permit it will still deny, however good your documentation is.

How Pabau supports orthopedic billing for CPT code 24340

Knowing the right code is half the job. The rest sits in the handoff between the operative note and the billing encounter, which is where orthopedic and surgical practices lose time.

In Pabau, billers attach CPT codes, ICD-10 codes, and modifier selections to the surgical encounter itself. The operative note stays open in the same patient record. That removes the step of pulling codes out of a separate document and typing them into a billing system.

The same workflow applies in physical rehabilitation billing, where the clinical record and the claim sit side by side. Fewer modifier omissions and code mismatches means less rework for the team chasing them.

Pabau’s built-in reporting then shows CPT frequency by provider, denial rates by code, and reimbursement trends across your payer mix. A practice billing 24340 alongside companion codes can run a denial report by code pair.

That report names the combinations triggering NCCI rejections. You can then fix the documentation workflow instead of waiting for the pattern to surface in manual claim review.

Streamline your orthopedic billing workflow

Pabau connects surgical documentation to claim generation in one platform. Link CPT codes, modifiers, and ICD-10 diagnosis codes straight from the operative note to the submitted claim, so your team spends less time correcting rejections.

Pabau claims management dashboard for orthopedic billing

Conclusion

CPT code 24340 is narrow in clinical scope and demanding in documentation. The separate procedure designation, the 24340 versus 24342 distinction, and the NCCI modifier rules are where well-intentioned claims go wrong.

Get those three right in the operative note, before the claim is generated. That is the difference between a clean first-pass submission and a denial cycle that costs more in rework than the procedure pays.

The practical move is to fix the record at the point of care, not at the point of appeal. If your billing team handles 24340 inside complex multi-procedure encounters, book a demo to see how Pabau connects surgical documentation to the claim.

Continue your research

Continue your research

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Billing fixation alongside a soft tissue repair? CPT code 20690 explains how uniplane external fixation is reported and documented.

Need the sequela code for a shoulder dislocation? ICD-10 code S43.121S sets out the documentation for right AC joint dislocation follow-up.

Documenting the exam that led to surgery? Neer’s test shows how to perform the shoulder impingement test and interpret the result.

Tracking recovery after an upper-limb repair? Functional status questionnaire gives you a ready-made form for measuring post-operative function.

Frequently asked questions

What is CPT code 24340?

CPT code 24340 is a surgical procedure code for tenodesis of the biceps tendon at the elbow, performed as a separate procedure. It is classified under the AMA CPT musculoskeletal system chapter, specifically the repair, revision, and reconstruction subsection for the humerus and elbow. The code is used when the biceps tendon is stabilized at the elbow without full reattachment of a ruptured end.

What is the difference between CPT 24340 and CPT 24342?

CPT 24340 covers tenodesis, where the biceps tendon is intact or partially torn and is anchored to bone or tissue for stabilization. CPT 24342 covers reinsertion of a completely ruptured biceps or triceps tendon back to its bony insertion point. The key distinction is tendon continuity: if the tendon has not fully separated from its insertion, use 24340. If there is a complete rupture with proximal retraction requiring reattachment to the radial tuberosity, use 24342.

What modifiers apply to CPT 24340?

Laterality modifiers -RT (right) and -LT (left) are always required. Modifier -51 applies when CPT 24340 is the secondary procedure in a multi-procedure claim. Modifier -59 applies when an NCCI bundling edit would otherwise group 24340 with another code. Use it only where the procedures are genuinely distinct by site, session, or indication. Modifier -80 applies when an assistant surgeon participates. Verify current NCCI edit pairs before applying -59, as incorrect use is an audit trigger.

What is the Medicare reimbursement rate for CPT 24340?

Medicare reimbursement for CPT 24340 comes from Physician Fee Schedule RVU values multiplied by the annual conversion factor. The geographic practice cost index then adjusts that figure for your locality. Non-facility rates (office-based procedures) are higher than facility rates (hospital or ASC). Exact dollar amounts change with each CMS Physician Fee Schedule update. Use the CMS PFS lookup tool or FastRVU for current-year locality-adjusted rates.

When is CPT 24340 billed as a separate procedure?

The “separate procedure” designation means CPT 24340 should not be billed when it forms an integral part of a more comprehensive elbow procedure. That applies at the same session and the same anatomical site. It can be billed on its own when it is the only elbow procedure performed. It can also be billed alongside other codes in three cases. The companion procedure sits at a different site, happened at a different time, or addresses a separately documented indication. Modifier -59 or an X-modifier must support the claim.

What are the RVU values for CPT 24340?

RVU values for CPT 24340 have three components. Work RVU reflects physician time and skill. Practice expense RVU reflects overhead, which differs between facility and non-facility settings. Malpractice RVU covers liability cost. The total RVU is the sum of all three, multiplied by the CMS conversion factor and adjusted for your locality. CMS updates these values annually in the Physician Fee Schedule final rule. Use the FastRVU lookup tool or the CMS PFS search for current-year values in your MAC locality.

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