HCPCS A-codes — Medical & surgical supplies, ambulance
A-codes cover medical and surgical supplies billed to the DME MACs — diabetic testing supplies, CPAP interfaces, ostomy, wound care, and incontinence products. Most are inexpensive but high-volume, so quantity limits and resupply cadences drive denials.
852 active codes in the April 2026 HCPCS file. PA = on Medicare's required prior-authorization list · Fee schedule = April 2026 DMEPOS amounts published.
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| Code | Description | Flags |
|---|---|---|
| A4415 | Ostomy skin barrier, with flange (solid, flexible or accordion), without built-in convexity, larger than 4 x 4 inches, each | Fee schedule |
| A4416 | Ostomy pouch, closed, with barrier attached, with filter (1 piece), each | Fee schedule |
| A4417 | Ostomy pouch, closed, with barrier attached, with built-in convexity, with filter (1 piece), each | Fee schedule |
| A4418 | Ostomy pouch, closed; without barrier attached, with filter (1 piece), each | Fee schedule |
| A4419 | Ostomy pouch, closed; for use on barrier with non-locking flange, with filter (2 piece), each | Fee schedule |
| A4420 | Ostomy pouch, closed; for use on barrier with locking flange (2 piece), each | Fee schedule |
| A4421 | Ostomy supply; miscellaneous | |
| A4422 | Ostomy absorbent material (sheet/pad/crystal packet) for use in ostomy pouch to thicken liquid stomal output, each | Fee schedule |
| A4423 | Ostomy pouch, closed; for use on barrier with locking flange, with filter (2 piece), each | Fee schedule |
| A4424 | Ostomy pouch, drainable, with barrier attached, with filter (1 piece), each | Fee schedule |
| A4425 | Ostomy pouch, drainable; for use on barrier with non-locking flange, with filter (2 piece system), each | Fee schedule |
| A4426 | Ostomy pouch, drainable; for use on barrier with locking flange (2 piece system), each | Fee schedule |
| A4427 | Ostomy pouch, drainable; for use on barrier with locking flange, with filter (2 piece system), each | Fee schedule |
| A4428 | Ostomy pouch, urinary, with extended wear barrier attached, with faucet-type tap with valve (1 piece), each | Fee schedule |
| A4429 | Ostomy pouch, urinary, with barrier attached, with built-in convexity, with faucet-type tap with valve (1 piece), each | Fee schedule |
| A4430 | Ostomy pouch, urinary, with extended wear barrier attached, with built-in convexity, with faucet-type tap with valve (1 piece), each | Fee schedule |
| A4431 | Ostomy pouch, urinary; with barrier attached, with faucet-type tap with valve (1 piece), each | Fee schedule |
| A4432 | Ostomy pouch, urinary; for use on barrier with non-locking flange, with faucet-type tap with valve (2 piece), each | Fee schedule |
| A4433 | Ostomy pouch, urinary; for use on barrier with locking flange (2 piece), each | Fee schedule |
| A4434 | Ostomy pouch, urinary; for use on barrier with locking flange, with faucet-type tap with valve (2 piece), each | Fee schedule |
| A4435 | Ostomy pouch, drainable, high output, with extended wear barrier (one-piece system), with or without filter, each | Fee schedule |
| A4436 | Irrigation supply; sleeve, reusable, per month | Fee schedule |
| A4437 | Irrigation supply; sleeve, disposable, per month | Fee schedule |
| A4438 | Adhesive clip applied to the skin to secure external electrical nerve stimulator controller, each | Fee schedule |
| A4450 | Tape, non-waterproof, per 18 square inches | Fee schedule |
| A4452 | Tape, waterproof, per 18 square inches | Fee schedule |
| A4453 | Rectal catheter with or without balloon, for use with any type transanal irrigation system, each | Fee schedule |
| A4455 | Adhesive remover or solvent (for tape, cement or other adhesive), per ounce | Fee schedule |
| A4456 | Adhesive remover, wipes, any type, each | Fee schedule |
| A4457 | Enema tube, with or without adapter, any type, replacement only, each | |
| A4458 | Enema bag with tubing, reusable | |
| A4459 | Manual transanal irrigation system, includes water reservoir, pump, tubing, and accessories, without catheter, any type | Fee schedule |
| A4461 | Surgical dressing holder, non-reusable, each | Fee schedule |
| A4463 | Surgical dressing holder, reusable, each | Fee schedule |
| A4465 | Non-elastic binder for extremity | |
| A4467 | Belt, strap, sleeve, garment, or covering, any type | |
| A4468 | Exsufflation belt, includes all supplies and accessories | |
| A4470 | Gravlee jet washer | |
| A4479 | Electronic transanal irrigation system, includes electronic pump, water reservoir, tubing, and accessories, without catheter, any type | Fee schedule |
| A4480 | Vabra aspirator | |
| A4481 | Tracheostoma filter, any type, any size, each | Fee schedule |
| A4483 | Moisture exchanger, disposable, for use with invasive mechanical ventilation | Fee schedule |
| A4490 | Surgical stockings above knee length, each | |
| A4495 | Surgical stockings thigh length, each | |
| A4500 | Surgical stockings below knee length, each | |
| A4510 | Surgical stockings full length, each | |
| A4520 | Incontinence garment, any type, (e.g., brief, diaper), each | |
| A4540 | Distal transcutaneous electrical nerve stimulator, stimulates peripheral nerves of the upper arm | |
| A4541 | Monthly supplies for use of device coded at e0733 | Fee schedule |
| A4542 | Supplies and accessories for external upper limb tremor stimulator of the peripheral nerves of the wrist | Fee schedule |
| A4543 | Supplies for transcutaneous electrical nerve stimulator, for nerves in the auricular region, per month | |
| A4544 | Electrode for external lower extremity nerve stimulator for restless legs syndrome | Fee schedule |
| A4545 | Supplies and accessories for external tibial nerve stimulator (e.g., socks, gel pads, electrodes, etc.), needed for one month | Fee schedule |
| A4550 | Surgical trays | |
| A4553 | Non-disposable underpads, all sizes | |
| A4554 | Disposable underpads, all sizes | |
| A4555 | Electrode/transducer for use with electrical stimulation device used for cancer treatment, replacement only | |
| A4556 | Electrodes, (e.g., apnea monitor), per pair | Fee schedule |
| A4557 | Lead wires, (e.g., apnea monitor), per pair | Fee schedule |
| A4558 | Conductive gel or paste, for use with electrical device (e.g., tens, nmes), per oz | Fee schedule |
| A4559 | Coupling gel or paste, for use with ultrasound device, per oz | Fee schedule |
| A4560 | Neuromuscular electrical stimulator (nmes), disposable, replacement only | |
| A4561 | Pessary, reusable, rubber, any type | Fee schedule |
| A4562 | Pessary, reusable, non rubber, any type | Fee schedule |
| A4563 | Rectal control system for vaginal insertion, for long term use, includes pump and all supplies and accessories, any type each | Fee schedule |
| A4564 | Pessary, disposable, any type | |
| A4565 | Slings | Fee schedule |
| A4566 | Shoulder sling or vest design, abduction restrainer, with or without swathe control, prefabricated, includes fitting and adjustment | |
| A4570 | Splint | |
| A4575 | Topical hyperbaric oxygen chamber, disposable | |
| A4580 | Cast supplies (e.g., plaster) | |
| A4590 | Special casting material (e.g., fiberglass) | |
| A4593 | Neuromodulation stimulator system, adjunct to rehabilitation therapy regime, controller | Fee schedule |
| A4594 | Neuromodulation stimulator system, adjunct to rehabilitation therapy regime, mouthpiece each | Fee schedule |
| A4595 | Electrical stimulator supplies, 2 lead, per month, (e.g., tens, nmes) | Fee schedule |
| A4596 | Cranial electrotherapy stimulation (ces) system supplies and accessories, per month | Fee schedule |
| A4600 | Sleeve for intermittent limb compression device, replacement only, each | |
| A4601 | Lithium ion battery, rechargeable, for non-prosthetic use, replacement | |
| A4602 | Replacement battery for external infusion pump owned by patient, lithium, 1.5 volt, each | Fee schedule |
| A4604 | Tubing with integrated heating element for use with positive airway pressure device | Fee schedule |
| A4605 | Tracheal suction catheter, closed system, each | Fee schedule |
| A4606 | Oxygen probe for use with oximeter device, replacement | |
| A4608 | Transtracheal oxygen catheter, each | Fee schedule |
| A4611 | Battery, heavy duty; replacement for patient owned ventilator | |
| A4612 | Battery cables; replacement for patient-owned ventilator | |
| A4613 | Battery charger; replacement for patient-owned ventilator | |
| A4614 | Peak expiratory flow rate meter, hand held | Fee schedule |
| A4615 | Cannula, nasal | Fee schedule |
| A4616 | Tubing (oxygen), per foot | Fee schedule |
| A4617 | Mouth piece | Fee schedule |
| A4618 | Breathing circuits | Fee schedule |
| A4619 | Face tent | Fee schedule |
| A4620 | Variable concentration mask | Fee schedule |
| A4623 | Tracheostomy, inner cannula | Fee schedule |
| A4624 | Tracheal suction catheter, any type other than closed system, each | Fee schedule |
| A4625 | Tracheostomy care kit for new tracheostomy | Fee schedule |
| A4626 | Tracheostomy cleaning brush, each | Fee schedule |
| A4627 | Spacer, bag or reservoir, with or without mask, for use with metered dose inhaler | |
| A4628 | Oral and/or oropharyngeal suction catheter, each | Fee schedule |
| A4629 | Tracheostomy care kit for established tracheostomy | Fee schedule |
| A4630 | Replacement batteries, medically necessary, transcutaneous electrical stimulator, owned by patient | Fee schedule |
| A4633 | Replacement bulb/lamp for ultraviolet light therapy system, each | Fee schedule |
| A4634 | Replacement bulb for therapeutic light box, tabletop model | |
| A4635 | Underarm pad, crutch, replacement, each | Fee schedule |
| A4636 | Replacement, handgrip, cane, crutch, or walker, each | Fee schedule |
| A4637 | Replacement, tip, cane, crutch, walker, each. | Fee schedule |
| A4638 | Replacement battery for patient-owned ear pulse generator, each | Fee schedule |
| A4639 | Replacement pad for infrared heating pad system, each | Fee schedule |
| A4640 | Replacement pad for use with medically necessary alternating pressure pad owned by patient | Fee schedule |
| A4641 | Radiopharmaceutical, diagnostic, not otherwise classified | |
| A4642 | Indium in-111 satumomab pendetide, diagnostic, per study dose, up to 6 millicuries | |
| A4648 | Tissue marker, implantable, any type, each | |
| A4649 | Surgical supply; miscellaneous | |
| A4650 | Implantable radiation dosimeter, each | |
| A4651 | Calibrated microcapillary tube, each | |
| A4652 | Microcapillary tube sealant | |
| A4653 | Peritoneal dialysis catheter anchoring device, belt, each | |
| A4657 | Syringe, with or without needle, each | |
| A4660 | Sphygmomanometer/blood pressure apparatus with cuff and stethoscope | |
| A4663 | Blood pressure cuff only |
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