A4301 — Implantable access total catheter, port/reservoir (e.g., venous, arterial, epidural, subarachnoid, peritoneal, etc.)
A4301 is a HCPCS Level II code for implantable access total catheter, port/reservoir (e.g., venous, arterial, epidural, subarachnoid, peritoneal, etc.). It belongs to the Transportation, Medical & Surgical Supplies, Administrative 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.
Physician fee schedule statusP
Bundled or excluded. No RVUs and no payment: either bundled into another service or paid under a different provision of the Act.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of A4301 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 2 — Date of Service Edit: Policy · Code Descriptor / CPT Instruction
- outpatient
- 1 unit MAI 2 — Date of Service Edit: Policy · Code Descriptor / CPT Instruction
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 A4301
- Long descriptor
- Implantable access total catheter, port/reservoir (e.g., venous, arterial, epidural, subarachnoid, peritoneal, etc.)
- Short descriptor
- Implantable access syst perc
- Added
- January 1, 1996
- BETOS
- D1A
- 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 A4301
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If A4301 is not quite right, the correct code is very often within a few positions of it.
- A4286Locking ring for breast pump, replacement
- A4287Disposable collection and storage bag for breast milk, any size, any type, each
- A4288Valve for breast pump, replacement
- A4290Sacral nerve stimulation test lead, each
- A4295Intermittent urinary catheter; straight tip, hydrophilic coating, each
- A4296Intermittent urinary catheter; coude (curved) tip, hydrophilic coating, each
- A4297Intermittent urinary catheter; hydrophilic coating, with insertion supplies
- A4300Implantable access catheter, (e.g., venous, arterial, epidural subarachnoid, or peritoneal, etc.) external access
- A4305Disposable drug delivery system, flow rate of 50 ml or greater per hour
- A4306Disposable drug delivery system, flow rate of less than 50 ml per hour
- A4310Insertion tray without drainage bag and without catheter (accessories only)
- A4311Insertion tray without drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.)
- A4312Insertion tray without drainage bag with indwelling catheter, foley type, two-way, all silicone
- A4313Insertion tray without drainage bag with indwelling catheter, foley type, three-way, for continuous irrigation
- A4314Insertion tray with drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.)
- A4315Insertion tray with drainage bag with indwelling catheter, foley type, two-way, all silicone
Questions about A4301
What is HCPCS code A4301?
A4301 is a HCPCS Level II code for implantable access total catheter, port/reservoir (e.g., venous, arterial, epidural, subarachnoid, peritoneal, etc.). It sits in the Transportation, Medical & Surgical Supplies, Administrative section.
Does Medicare cover A4301?
The CMS HCPCS file marks A4301 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.
How is A4301 paid under the physician fee schedule?
A4301 carries PFS status code P. Bundled or excluded. No RVUs and no payment: either bundled into another service or paid under a different provision of the Act.