L8684 — Radiofrequency transmitter (external) for use with implantable sacral root neurostimulator receiver for bowel and bladder management, replacement
L8684 is a HCPCS Level II code for radiofrequency transmitter (external) for use with implantable sacral root neurostimulator receiver for bowel and bladder management, replacement. 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 L8684 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 · Nature of Equipment
- outpatient
- 1 unit MAI 3 — Date of Service Edit: Clinical · Nature of Equipment
- DME supplier
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
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 L8684
- Long descriptor
- Radiofrequency transmitter (external) for use with implantable sacral root neurostimulator receiver for bowel and bladder management, replacement
- Short descriptor
- Radiof trsmtr implt scrl neu
- Added
- January 1, 2006
- BETOS
- D1F
- Pricing indicator
- 38 — 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.
Orthotics, prosthetics, prosthetic devices and vision services. Price subject to floors and ceilings.
Codes adjacent to L8684
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If L8684 is not quite right, the correct code is very often within a few positions of it.
- L8659Interphalangeal finger joint replacement, 2 or more pieces, metal (e.g., stainless steel or cobalt chrome), ceramic-like material (e.g., pyrocarbon) for surgical implantation, any size
- L8670Vascular graft material, synthetic, implant
- L8678Electrical stimulator supplies (external) for use with implantable neurostimulator, per month
- L8679Implantable neurostimulator, pulse generator, any type
- L8680Implantable neurostimulator electrode, each
- L8681Patient programmer (external) for use with implantable programmable neurostimulator pulse generator, replacement only
- L8682Implantable neurostimulator radiofrequency receiver
- L8683Radiofrequency transmitter (external) for use with implantable neurostimulator radiofrequency receiver
- L8685Implantable neurostimulator pulse generator, single array, rechargeable, includes extension
- L8686Implantable neurostimulator pulse generator, single array, non-rechargeable, includes extension
- L8687Implantable neurostimulator pulse generator, dual array, rechargeable, includes extension
- L8688Implantable neurostimulator pulse generator, dual array, non-rechargeable, includes extension
- L8689External recharging system for battery (internal) for use with implantable neurostimulator, replacement only
- L8690Auditory osseointegrated device, includes all internal and external components
- L8691Auditory osseointegrated device, external sound processor, excludes transducer/actuator, replacement only, each
- L8692Auditory osseointegrated device, external sound processor, used without osseointegration, body worn, includes headband or other means of external attachment
Questions about L8684
What is HCPCS code L8684?
L8684 is a HCPCS Level II code for radiofrequency transmitter (external) for use with implantable sacral root neurostimulator receiver for bowel and bladder management, replacement. It sits in the Orthotic and Prosthetic Procedures and Devices section.
Does Medicare cover L8684?
The CMS HCPCS file marks L8684 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.