L8499 — Unlisted procedure for miscellaneous prosthetic services
L8499 is a HCPCS Level II code for unlisted procedure for miscellaneous prosthetic services. It belongs to the Orthotic and Prosthetic Procedures and Devices section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
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 L8499 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
- 1 unit MAI 3 — Date of Service Edit: Clinical · Clinical: CMS Workgroup
- outpatient
- 1 unit MAI 3 — Date of Service Edit: Clinical · Clinical: CMS Workgroup
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 L8499
- Long descriptor
- Unlisted procedure for miscellaneous prosthetic services
- Short descriptor
- Unlisted misc prosthetic ser
- Added
- January 1, 1982
- BETOS
- D1F
- Pricing indicator
- 46 — DMEPOS
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.
Carrier priced — not otherwise classified, individual determination, carrier discretion, or gap-filled amounts.
Codes adjacent to L8499
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If L8499 is not quite right, the correct code is very often within a few positions of it.
- L8430Prosthetic sock, multiple ply, above knee, each
- L8435Prosthetic sock, multiple ply, upper limb, each
- L8440Prosthetic shrinker, below knee, each
- L8460Prosthetic shrinker, above knee, each
- L8465Prosthetic shrinker, upper limb, each
- L8470Prosthetic sock, single ply, fitting, below knee, each
- L8480Prosthetic sock, single ply, fitting, above knee, each
- L8485Prosthetic sock, single ply, fitting, upper limb, each
- L8500Artificial larynx, any type
- L8501Tracheostomy speaking valve
- L8505Artificial larynx replacement battery / accessory, any type
- L8507Tracheo-esophageal voice prosthesis, patient inserted, any type, each
- L8509Tracheo-esophageal voice prosthesis, inserted by a licensed health care provider, any type
- L8510Voice amplifier
- L8511Insert for indwelling tracheoesophageal prosthesis, with or without valve, replacement only, each
- L8512Gelatin capsules or equivalent, for use with tracheoesophageal voice prosthesis, replacement only, per 10
Questions about L8499
What is HCPCS code L8499?
L8499 is a HCPCS Level II code for unlisted procedure for miscellaneous prosthetic services. It sits in the Orthotic and Prosthetic Procedures and Devices section.
Does Medicare cover L8499?
The CMS HCPCS file marks L8499 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.