CPT code 23076 – Subfascial shoulder soft tissue tumor excision

Key takeaways

CPT code 23076 covers subfascial (intramuscular) shoulder tumor excision under 5 cm. Subfascial tumors of 5 cm or greater go to 23073, and subcutaneous tumors go to 23075 or 23071.

Codes 23077 and 23078 are radical resections, a different procedure from simple excision, split at the same 5 cm threshold.

The operative report must document both the tissue layer (subfascial or intramuscular) and a measured tumor size under 5 cm. Missing either one invites a denial.

A 90-day global period applies, and related routine follow-up inside it is bundled and not billable. Modifier 24 applies only to an unrelated E/M service in that window.

Pabau, the practice management platform we build, submits 23076 claims electronically through Claim.MD and tracks each claim’s status through to payment or denial.

CPT code 23076: official descriptor and code structure

CPT code 23076 describes excision, tumor, soft tissue of shoulder area, subfascial (e.g., intramuscular); less than 5 cm. The American Medical Association (AMA) owns and maintains the CPT code set. It places 23076 in the Musculoskeletal System section, Shoulder subsection, under the Excision heading.

Two criteria must both be present for 23076 to apply. The tumor must be subfascial (below the deep fascia, including intramuscular locations), and it must measure less than 5 cm. Neither criterion alone is sufficient.

A subcutaneous tumor goes to 23075 when it is under 3 cm, and to 23071 when it is 3 cm or greater. A subfascial tumor of 5 cm or greater goes to 23073. The grid below maps all six shoulder codes by procedure and size.

The code is billable and carries a 90-day global period, meaning routine post-operative visits are bundled into the surgical payment.

What the procedure involves: clinical context for coders

A subfascial shoulder tumor excision begins with an incision over the mass. The surgeon dissects through the subcutaneous layer, then through or around the deep fascia to reach the tumor. The tumor is excised with a margin of surrounding tissue, and the specimen is sent for pathology. Closure proceeds in layers.

For coders, the operative note must confirm three things before 23076 can be assigned.

• The incision extended below the deep fascia (subfascial or intramuscular dissection confirmed)
• The tumor measured less than 5 cm on pathology or in the operative note
• The anatomical site is within the shoulder area (the CPT descriptor uses “shoulder area,” not just “shoulder joint”)

If the operative note describes dissection limited to the subcutaneous layer, 23076 cannot be used regardless of tumor size. Depth is a clinical judgment made by the surgeon and documented in the operative report. Coders should never determine tissue layer from imaging alone.

23076 vs 23075 vs 23073: choosing the right shoulder tumor code

The shoulder soft tissue tumor codes form a six-code family. Depth and size separate the four excision codes (23071, 23073, 23075 and 23076), while 23077 and 23078 are radical resections. The American College of Surgeons bulletin on reporting excision of soft tissue tumor codes is the most authoritative specialty-society reference for this family.

A frequent miscoding error is selecting 23073 when the operative note shows a subfascial dissection but the specimen measures 4.8 cm. Billing 23073 without a documented size of 5 cm or more is an audit risk. When the tumor does reach 5 cm, our guide to CPT 23073 covers the larger excision.

Documentation requirements for CPT code 23076

Two fields in the operative report are payer audit triggers for CPT code 23076: tissue layer confirmation and measured tumor size. Both must appear explicitly. For clean claim submission, the operative report should document all of the following.

• Subfascial or intramuscular depth: the surgeon’s description of dissection below the deep fascia, using language such as “subfascial,” “intramuscular,” or “below the investing fascia”
• Measured tumor size under 5 cm: a specific centimeter measurement in the operative note or on the pathology report. Some payers reject “small” or “approximately 4 cm”
• Anatomical location: the shoulder area, including deltoid region, rotator cuff musculature, or proximal humerus region
• Excision with margins: documentation that the tumor was excised rather than debulked
• Pathology specimen: confirmation that the specimen was submitted; pathology results support ICD-10 code selection (benign vs. malignant)

ICD-10 code selection should be based on the pathology report, not a pre-operative assumption. Payer coverage criteria can differ between benign and malignant diagnoses, so assign the final diagnosis code only once pathology results are available.

ICD-10 diagnosis codes commonly paired with CPT 23076

The ICD-10-CM codes most often submitted with CPT code 23076 depend on whether the mass is still uncharacterized, benign, or malignant. The pathology report drives final code selection.

Laterality matters: D21.11 and D21.12 are distinct codes, not interchangeable. A claim coded for one shoulder against a clinical note that specifies the other is a documentation mismatch. Payers flag it on audit.

Modifiers for CPT code 23076

Modifier selection for CPT code 23076 depends on the clinical scenario. The most commonly applied modifiers and their triggers are listed below.

Modifier 50 vs. LT/RT is a common point of confusion. Medicare generally prefers a single line item with modifier 50. Many commercial payers prefer two separate line items, one with LT and one with RT. The wrong format for the payer usually triggers a claim edit rather than an outright denial, but it adds processing time.

Medicare reimbursement and RVU values

Reimbursement for CPT code 23076 is calculated using relative value units (RVUs) from the CMS Physician Fee Schedule. Compare the facility and non-facility rows on the CMS lookup for the setting where the procedure is performed.

For 2026 RVU values and national fee schedule rates, use the FastRVU 2026 RVU lookup tool or the CMS MPFS lookup directly. The table below shows how the RVU breakdown is structured. Always verify current figures from CMS before billing.

Commercial payers typically reimburse at a contractual multiple of the Medicare rate, commonly ranging from 100% to 200% depending on the payer contract. Always verify the contracted rate in the payer agreement rather than assuming Medicare equivalence.

Prior authorization requirements

Prior authorization requirements for CPT code 23076 vary by payer type. Insurance eligibility verification before scheduling the procedure is the most reliable way to catch PA requirements before the surgical date.

• Traditional Medicare (Parts A and B): generally does not require prior authorization for 23076 under current CMS rules, though Medicare Advantage plans may
• Medicare Advantage plans: many require prior authorization. Criteria commonly include imaging evidence of the mass, confirmation of symptoms, and a physician statement of medical necessity
• Commercial insurance: PA requirements vary widely by plan; some commercial plans require imaging-confirmed subfascial location before approving the procedure
• Medicaid: prior authorization is common; requirements differ by state and managed care organization

A PA request should document why conservative management is not appropriate and reference the imaging study showing the mass location. It should also state the anticipated tissue layer and size, which justifies the code selection upfront.

Common denial reasons for CPT 23076 claims

Most denials for CPT code 23076 are preventable. Effective denial management workflows for surgical codes start with knowing which documentation elements payers audit most closely. The leading denial causes for 23076 are:

• Missing tumor size measurement: the operative note describes the tumor but gives no centimeter measurement, so the claim cannot be validated as under 5 cm
• Wrong tissue layer coded: the operative report documents subcutaneous dissection but 23076 (subfascial) was submitted; payers cross-reference the operative note
• Upcoding to 23073: the tumor measured under 5 cm, but 23073 (subfascial excision, 5 cm or greater) was billed. Payers can deny the line and flag the claim for review
• Missing or incorrect modifier: LT/RT not appended when the payer requires laterality, or modifier 50 used when the payer requires two line items
• PA not obtained: a Medicare Advantage or commercial plan required prior authorization and the claim was submitted without it
• ICD-10 mismatch: the diagnosis code does not match the operative site (e.g., a left-side ICD-10 code submitted for a right-shoulder procedure)
• Global period conflict: a related post-op visit billed separately during the 90-day global period, or an unrelated E/M visit billed without modifier 24

Our guide to denial codes in medical billing explains the reason and remark codes (CARCs and RARCs) on a remittance. It also covers how to respond to each one.

Bundling rules and NCCI edits for CPT 23076

The National Correct Coding Initiative (NCCI) publishes bundling edits that govern which procedures can be billed separately alongside CPT code 23076. According to CMS NCCI policy, certain component services are integral to the surgical excision and are bundled into the payment for 23076.

Services typically bundled into 23076 include wound closure (layered or simple repair of the surgical incision) and surgical preparation of the excision site. Imaging interpretation by the same provider on the same day, as part of surgical planning, is bundled too. These cannot be billed separately.

Services that may be separately billable with the correct modifier:

• A distinct separate procedure at a different anatomical site: append modifier 59 or the more specific XS modifier. It shows the second procedure is at a separate site and not a component of 23076
• Pathology and laboratory services: pathology examination of the excised specimen is typically billed separately by the pathologist. The operating surgeon should not bill an interpretation another provider performed
• Anesthesia: billed separately by the anesthesiology provider using anesthesia codes; not bundled into the surgical code

NCCI edits are updated quarterly. Check the current edit tables in the CMS NCCI policy manual before unbundling any procedure with modifier 59.

Global period and post-operative billing for CPT 23076

CPT code 23076 carries a 90-day global surgical period, assigned by CMS. The surgical payment bundles all routine post-operative care for 90 days after the procedure. Knowing what the global package covers prevents claims that payers deny automatically.

Services included in the 90-day global package for 23076:

• The operative and post-operative care on the day of surgery
• All routine follow-up visits related to the surgery during the 90-day period
• Uncomplicated wound care and suture removal
• Complications that do not require a return to the operating room

Services that can be billed separately during the 90-day global period with the appropriate modifier:

• Modifier 24: an unrelated E/M visit during the global period, such as a visit for an unrelated illness. The note must clearly show the visit is unrelated to the tumor excision
• Modifier 57: the E/M visit at which the decision to operate is made, on the day before or the day of surgery. It applies before the procedure only, never in the post-op period
• Modifier 79: an unrelated procedure performed during the global period, such as a return to the operating room for a completely separate condition
• Modifier 78: a return to the operating room for a complication of the original surgery. It is paid at the intraoperative portion only and does not start a new global period

Billing a related follow-up visit separately during the 90-day global period is a common post-surgical billing error for this code family. Only an unrelated E/M visit takes modifier 24. Pabau’s guide to revenue cycle management shows how the global period fits the wider claim-to-remittance flow.

How Pabau tracks 23076 claims from submission to payment

Without a connected system, a coded 23076 claim often gets rekeyed into a separate clearinghouse portal. Its status then lives on payer websites, and a denial can sit unnoticed until the remittance arrives.

In Pabau’s claims management software, the claim is built from the invoice your team already raised. It goes out electronically as a CMS-1500 through Claim.MD, our US clearinghouse partner, to thousands of US payers. Real-time eligibility checks run from the patient’s record before the surgery date.

Each claim’s status then updates from the payer through acceptance, payment or denial, and remittance advice comes back into Pabau. Your coders still own the depth and size checks. What changes is that they see a denial soon after it lands and can correct it while the case is fresh.

Track every surgical claim to payment

Pabau submits CPT 23076 claims electronically through Claim.MD and shows each claim’s status through to payment. Denials surface while the case is still fresh.

Book a demo

Conclusion

CPT code 23076 is won or lost in the operative report. When the surgeon documents subfascial depth and a measured size under 5 cm, the code holds up at audit.

So treat depth and size as required fields in every operative note review. Check each shoulder tumor case against all six codes before you assign one. A few extra minutes per case costs far less than a denial and an appeal.

Book a demo to see how Pabau submits and tracks your surgical claims, so 23076 denials surface while the case is still fresh.

Continue your research

Need to understand how clearinghouse submission works for surgical codes? Claim.MD clearinghouse guide explains how electronic claim routing and real-time edits reduce rework on procedure codes.

Looking to reduce denials across your billing workflow? Medical billing compliance guide covers documentation standards and payer audit triggers for surgical practices.

Want to understand 837 transaction file requirements for surgical claims? 837 file guide covers the electronic claim format used to submit CPT codes to payers and clearinghouses.

Frequently asked questions