Description
What Is the L1833 HCPCS Code?
The L1833 HCPCS code is defined by CMS as: Knee Orthosis, Adjustable Knee Joints (Unicentric or Polycentric), Positional Orthosis, Rigid Support, Prefabricated, Off-the-Shelf. It covers prefabricated hinged knee braces that are dispensed directly to the patient without modification making it the standard code for dropship DME fulfillment models.
The L1833 is one of the most commonly billed lower limb orthosis codes under Medicare Part B. It is covered under LCD L33318 (Lower Limb Orthoses), administered by the DME MACs. Correct billing requires a valid written order, a qualifying diagnosis, and compliant delivery documentation including a signed proof of delivery.
L1833 vs L1832 — What Is the Difference?
L1833 is a prefabricated, off-the-shelf brace dispensed as-is to the patient. No modification required. This is the correct code for dropship fulfillment where the brace ships directly from the supplier to the patient.
L1832 covers the same brace when it has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by a qualified individual with expertise. L1832 requires a licensed orthotist or qualified practitioner to modify the device before or at delivery.
For DME companies using Ava Medical Supply’s dropship program, L1833 is the applicable code the brace ships prefabricated and off-the-shelf directly to your patient.
Qualifying Diagnoses for L1833 (ICD-10 Codes)
The patient’s treating physician must document a qualifying diagnosis supporting medical necessity. Common ICD-10 codes that support L1833 coverage include:
M17.11 — Primary osteoarthritis, right knee M17.12 Primary osteoarthritis, left knee M17.31 Post-traumatic osteoarthritis, right knee M23.61 Other spontaneous disruption of ligament of right knee M25.361 — Stiffness of right knee, NEC S83.401A Sprain of unspecified collateral ligament of right knee Z96.641 Presence of right artificial knee joint (post-replacement support)
Note: This is not an exhaustive list. Coverage is determined by the DME MAC based on medical necessity documentation. Always verify coverage with the patient’s payer before dispensing.
Documentation Requirements for L1833 Billing
To support a clean Medicare claim for the L1833, your file should contain:
Written order (prescription) from the treating physician — dated before dispensing Qualifying ICD-10 diagnosis code on the order PDAC approval certificate for the specific product SKU Signed proof of delivery with patient signature, delivery date, and item description Certificate of Medical Necessity (CMN) or Detailed Written Order (DWO) if required by your DME MAC
Ava Medical Supply provides PDAC approval documentation and HIPAA-compliant delivery confirmation with every order — the two most frequently cited documentation gaps in DME audit findings.
L1833 Wholesale Pricing for DME Companies
Ava Medical Supply offers wholesale pricing on the L1833 for licensed DME providers and companies operating a dropship model. We do not sell directly to patients — our program is exclusively B2B.
Pricing is tiered based on order volume and is available to:
Licensed DME companies enrolled with Medicare Orthopedic and pain management clinics with DME billing capability Physical therapy and chiropractic practices with active DMEPOS accreditation Telehealth platforms dispensing braces under a compliant dropship model
To request pricing, submit your NPI and DME license via our contact form. Most accounts are onboarded within 3–5 business days.
Frequently Asked Questions — L1833 Knee Brace
What is the CPT/HCPCS code description for L1833?
L1833 is not a CPT code — it is an HCPCS Level II code. The official CMS description is: Knee Orthosis, Adjustable Knee Joints (Unicentric or Polycentric), Positional Orthosis, Rigid Support, Prefabricated, Off-the-Shelf. It is used to bill for prefabricated hinged knee braces dispensed without modification under Medicare Part B.
Does Medicare cover the L1833 knee brace?
Yes. The L1833 is covered under Medicare Part B as durable medical equipment when medical necessity is documented, a valid written order exists, and the product is PDAC-approved. Coverage is governed by LCD L33318 (Lower Limb Orthoses). The patient must have a qualifying diagnosis and the brace must be ordered by a treating physician.
What is the difference between L1833 and L1832?
Both codes cover adjustable hinged knee orthoses. L1833 is prefabricated off-the-shelf — dispensed as manufactured with no modification. L1832 is the same device after it has been customized to fit a specific patient by a qualified individual. For dropship fulfillment models where the brace ships directly from supplier to patient, L1833 is the correct code.
What diagnosis codes qualify for the L1833?
Common qualifying ICD-10 codes include M17.11 and M17.12 (primary knee osteoarthritis), M23.61 (ligament disruption), M25.361 (knee stiffness), and post-surgical codes in the S83.x range. The treating physician’s documentation must establish medical necessity. Your DME MAC makes the final coverage determination.
How much does the L1833 knee brace cost for DME companies?
Wholesale pricing for the L1833 is available exclusively to licensed DME companies and healthcare providers. Pricing is volume-tiered. There are no restocking fees. Contact us with your NPI to receive a pricing sheet — we respond within one business day.
Can I dropship the L1833 brace directly to my patients?
Yes — this is exactly how our program works. You place the order, we ship the L1833 directly to your patient in HIPAA-compliant packaging with delivery documentation included. You handle billing. We handle fulfillment. No inventory, no warehouse, no per-unit overhead.
Do you provide PDAC documentation with each L1833 order?
Yes. Every L1833 order from Ava Medical Supply includes PDAC approval documentation for the specific SKU. This is required for Medicare billing and is one of the most common gaps found in DME audits. We include it automatically — no need to request it separately.
