L3090 — Foot, arch support, non-removable attached to shoe, longitudinal/metatarsal, each
L3090 is a HCPCS Level II code for foot, arch support, non-removable attached to shoe, longitudinal/metatarsal, each. It belongs to the Orthotic and Prosthetic Procedures and Devices section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Medically Unlikely Edits — units per day
The most units of L3090 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 2 units MAI 3 — Date of Service Edit: Clinical · Anatomic Consideration
- DME supplier
- 2 units MAI 3 — Date of Service Edit: Clinical · Anatomic Consideration
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for L3090
- Long descriptor
- Foot, arch support, non-removable attached to shoe, longitudinal/metatarsal, each
- Short descriptor
- Arch supp att to shoe long/m
- Added
- January 1, 1984
- BETOS
- D1F
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to L3090
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If L3090 is not quite right, the correct code is very often within a few positions of it.
- L3020Foot, insert, removable, molded to patient model, longitudinal/ metatarsal support, each
- L3030Foot, insert, removable, formed to patient foot, each
- L3031Foot, insert/plate, removable, addition to lower extremity orthosis, high strength, lightweight material, all hybrid lamination/prepreg composite, each
- L3040Foot, arch support, removable, premolded, longitudinal, each
- L3050Foot, arch support, removable, premolded, metatarsal, each
- L3060Foot, arch support, removable, premolded, longitudinal/ metatarsal, each
- L3070Foot, arch support, non-removable attached to shoe, longitudinal, each
- L3080Foot, arch support, non-removable attached to shoe, metatarsal, each
- L3100Hallus-valgus night dynamic splint, prefabricated, off-the-shelf
- L3140Foot, abduction rotation bar, including shoes
- L3150Foot, abduction rotation bar, without shoes
- L3160Foot, adjustable shoe-styled positioning device
- L3161Foot, adductus positioning device, adjustable
- L3170Foot, plastic, silicone or equal, heel stabilizer, prefabricated, off-the-shelf, each
- L3201Orthopedic shoe, oxford with supinator or pronator, infant
- L3202Orthopedic shoe, oxford with supinator or pronator, child
Questions about L3090
What is HCPCS code L3090?
L3090 is a HCPCS Level II code for foot, arch support, non-removable attached to shoe, longitudinal/metatarsal, each. It sits in the Orthotic and Prosthetic Procedures and Devices section.
Does Medicare cover L3090?
The CMS HCPCS file marks L3090 as "Special coverage instructions apply". There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.