A4300: Implantable access catheter, (e.g., venous, arterial, epidural subarachnoid, or peritoneal, etc.) external access
A4300 is a HCPCS Level II code for implantable access catheter, (e.g., venous, arterial, epidural subarachnoid, or peritoneal, etc.) external access. It belongs to the Transportation, Medical & Surgical Supplies, Administrative 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 2026Q4-Oct. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusB
Bundled code. Payment is always bundled into another service. CMS: 'If RVUs are shown, they are not used for Medicare payment.'
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 A4300 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
- 4 units MAI 3: Date of Service Edit: Clinical · Clinical: Data
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 2026Q4.
The CMS record for A4300
- Long descriptor
- Implantable access catheter, (e.g., venous, arterial, epidural subarachnoid, or peritoneal, etc.) external access
- Short descriptor
- Cath impl vasc access portal
- Added
- January 1, 1986
- BETOS
- Y1
- Pricing indicator
- 11: Physician fee schedule
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.
Price established using national RVUs.
Codes adjacent to A4300
HCPCS has no hierarchy: related items simply sit next to each other in the numbering. If A4300 is not quite right, the correct code is very often within a few positions of it.
- A4285Polycarbonate bottle for use with breast pump, replacement
- 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
- A4301Implantable access total catheter, port/reservoir (e.g., venous, arterial, epidural, subarachnoid, peritoneal, etc.)
- 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.)