HCPCS code L0623 – Sacroiliac orthosis, rigid or semi-rigid panels

Key takeaways

HCPCS code L0623 covers a sacroiliac orthosis with rigid or semi-rigid panels over the sacrum and abdomen, supplied prefabricated and off the shelf.

Bill L0621 for a flexible SI belt without panels, and L0622 or L0624 when the orthosis is custom-fabricated for the patient.

Medicare covers L0623 under the Spinal Orthoses LCD (L33790), and the code is not on the CMS Required Prior Authorization List.

A Medicare claim needs a standard written order, medical records that support an LCD indication, and a signed proof of delivery.

Claims software such as Pabau keeps the order, clinical notes, and delivery record on one patient file, so each L0623 claim matches its file.

What is HCPCS code L0623?

HCPCS code L0623 is the Level II code for a sacroiliac orthosis (SO) with rigid or semi-rigid panels over the sacrum and abdomen. It provides pelvic-sacral support and reduces motion about the sacroiliac joint. The brace is prefabricated and dispensed off the shelf.

Two features make a brace L0623. The panels are rigid or semi-rigid, which separates it from the flexible L0621 belt. It also reaches the patient off the shelf, which separates it from the custom-fabricated L0624.

Medicare covers L0623 under the DMEPOS benefit and the Spinal Orthoses LCD (L33790). Unlike several rigid lumbar-sacral codes, L0623 is not on the CMS Required Prior Authorization List.

L0623 code description and key specifications

The official CMS HCPCS Level II code set describes L0623 by anatomy, function, and how the brace reaches the patient. The table breaks the full descriptor into its parts, in the order CMS lists them.

Each part should match the product you dispense and the notes in the patient’s file.

L0623 vs L0621, L0622 and L0624

AAPC files L0623 under Sacral Orthotics (L0621-L0624), and two questions separate the four codes. Does the brace have rigid or semi-rigid panels? And did it reach the patient off the shelf or custom-fabricated? The table below uses the official CMS descriptors.

Run the two questions in order:

• If the brace is a flexible belt with no panels and was handed over ready to wear, bill L0621.
• If it is a flexible belt built for this patient from measurements or a model, bill L0622.
• If it has rigid or semi-rigid sacral and abdominal panels and needed only minimal self-adjustment, bill L0623.
• If it has those panels and was individually made for this patient, bill L0624.

Medicare’s policy article A52500 adds one more check on the flexible side. The CG modifier goes on L0621 only when the belt is made mainly of nonelastic material, such as canvas, cotton or nylon. No such rule applies to L0623, because its panels already make it a rigid or semi-rigid device.

A brace that also extends up the lumbar spine is not an SO at all. It belongs in the lumbar and lumbar-sacral range that starts at L0625. The diagram puts that check first, then the panels, then how the brace was made.

Medicare coverage criteria for L0623

Medicare covers a sacroiliac orthosis billed with L0623 when the records show it is reasonable and necessary under the Spinal Orthoses LCD (L33790). The LCD recognizes four uses for a spinal orthosis:

• To reduce pain by restricting mobility of the trunk
• To facilitate healing following an injury to the spine or related soft tissues
• To facilitate healing following a surgical procedure on the spine or related soft tissue
• To otherwise support weak spinal muscles or a deformed spine

For an SO, the notes should tie the brace to the sacroiliac joint or pelvic ring rather than to the lumbar spine. Commercial and Medicaid plans set their own criteria, so read the plan’s orthotics policy before delivery.

ICD-10 diagnosis codes often paired with L0623

The diagnosis codes below often appear on sacroiliac orthosis claims, and M46.1 heads the list. The list is illustrative, not a covered-diagnosis list. Medical necessity rests on the clinical notes, so the diagnosis alone does not establish coverage.

Prior authorization and Advance Beneficiary Notice

L0623 does not appear on the CMS Required Prior Authorization List for DMEPOS, last updated July 29, 2026. That list covers rigid lumbar-sacral codes such as L0631, L0637, L0639, L0648 and L0650, not the sacroiliac range.

• Check the list each year. CMS updates it through the Federal Register, so confirm the current version before you rely on this.
• Check commercial and Medicaid plans separately. Many set their own authorization rules for spinal orthoses.
• Issue an ABN when you expect a denial. If the records may not support an LCD indication, have the beneficiary sign an Advance Beneficiary Notice before delivery.

Running insurance eligibility verification before every delivery confirms which plan rules apply. It also shows whether the patient’s plan wants its own authorization.

Documentation requirements for L0623 claims

An L0623 claim holds up only as well as the file behind it. Keep each of the following in the patient’s file before the claim goes out:

• Standard written order: It names the beneficiary, the order date, a description of the item, the quantity, and the treating practitioner, with that practitioner’s signature.
• Medical records: Notes from the treating practitioner show the sacroiliac or pelvic diagnosis, the functional limitation, and which LCD use the brace serves.
• Product specification: Keep the product details showing the rigid or semi-rigid panels, since they separate L0623 from L0621.
• Proof of delivery: A signed and dated delivery record from the beneficiary or their designee identifies the item that was delivered.
• Advance Beneficiary Notice (ABN): Issue one before delivery when you expect Medicare to deny the brace as not reasonable and necessary.

CMS expects DMEPOS suppliers to keep these records for seven years from the date of service. Organized medical billing compliance workflows file them at delivery, rather than leaving staff to chase them once an audit request arrives.

Medicare fee schedule and reimbursement for L0623

Medicare pays L0623 under the CMS DMEPOS fee schedule, which CMS updates each year and publishes by state. Look up the current allowed amount in the CMS file for your state. Third-party rate sites often carry last year’s figures after the January update.

Bill your usual charge for the device. Medicare pays the lesser of the fee schedule amount or the submitted charge, so a charge below the schedule lowers the payment.

Modifiers used with HCPCS code L0623

Modifiers on an L0623 claim describe the claim’s circumstances, such as a replacement or an ABN on file. None of them tells Medicare how the brace was made, because the code itself carries that information. Confirm each requirement with your DME MAC or payer.

Common reasons L0623 claims are denied

L0623 denials trace back to a short list of causes, and each one can be caught before the claim goes out. The payer reports them with standard denial codes on the remittance advice. Effective denial management in healthcare starts with a pre-claim review, so use the table below as a checklist.

Remittance advice often pairs these denials with CARC CO-50 (not deemed a medical necessity by the payer) or CO-167 (the diagnosis is not covered). CO-96 marks a non-covered charge. CO-5 means something else: the procedure code or bill type is inconsistent with the place of service.

Billing L0623 for non-Medicare payers

Commercial insurers and Medicaid programs handle HCPCS code L0623 differently from Medicare. Check these points before you submit:

• Prior authorization: Some plans require it for any spinal orthosis, whatever Medicare’s rules are. Others set the trigger at a dollar threshold in the contract.
• Coverage limits: Some Medicaid programs limit how often a beneficiary can receive a replacement brace.
• Fee schedule basis: Commercial payers usually pay a contracted rate rather than the CMS fee schedule. Know that rate before you quote the patient’s out-of-pocket cost.
• Code acceptance: Most US commercial payers accept HCPCS L-codes. Medicaid managed care plans sometimes keep their own code-to-benefit crosswalk, so confirm with them first.
• Documentation: Many plans want a letter of medical necessity alongside the order and clinical notes.

How Pabau supports accurate L0623 claim submission

Most L0623 coding errors happen before anyone opens the claim. The order says “SI belt”, the product details sit in one place, and the delivery note sits in another. So the biller codes from the prescription, and L0621 and L0623 blur together.

Pabau, the practice management platform we build, keeps the written order, product details, and signed delivery record on one patient file. Its tools for faster, cleaner claims pull those details onto the claim form, so nobody rekeys them. In the US, Pabau’s Claim.MD integration submits and tracks claims.

The result is a claim that matches its file. When a reviewer asks whether the brace has panels, the product details sit next to the order. Claim status tracking shows which claims came back denied, so staff can fix a repeat problem at intake.

Stop losing revenue to preventable DMEPOS denials

Pabau keeps the order, product details, and delivery record for every sacroiliac orthosis claim on one patient file. Each L0623 claim then matches its documentation before it reaches the payer.

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Conclusion

Treat L0623 as a statement about two facts: the brace has rigid or semi-rigid panels, and it reached the patient off the shelf. Change either fact and the code becomes L0621, L0622 or L0624.

The lumbar codes are the other trap. A brace that climbs the lumbar spine belongs in the L0625 range, however the order describes it. Settle the design, the delivery method and the medical records before the claim goes out.

Book a demo to see how Pabau keeps the order, product details and delivery record for each L0623 claim on one patient file.

Continue your research

Coding the injury behind the brace? ICD-10 code S33.6 explains how to code a sacroiliac joint sprain and pick the right seventh character.

Treating SI joint pain with injections too? CPT code 27096 walks through billing a sacroiliac joint injection and its imaging guidance requirement.

Sending DME claims electronically? Medical claims clearinghouse explains how 837P claims move from the billing system to the payer and where edits are applied.

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