Search all medical codes

Conductive gel or paste, for use with electrical device (e.g., tens, nmes), per oz

HCPCS code

Name of the Procedure:

Conductive Gel or Paste (A4558)


Conductive gel or paste is used in conjunction with electrical devices, such as Transcutaneous Electrical Nerve Stimulation (TENS) or Neuromuscular Electrical Stimulation (NMES), to enhance the conductivity between the electrode pads and the skin. This improves the efficiency and comfort of the electrical stimulation treatment.


The primary purpose of conductive gel or paste is to ensure proper transmission of electrical impulses from the device to the patient's skin, thereby improving the effectiveness of the therapy. It helps in reducing skin resistance and preventing electrical burns or irritation.


  • Chronic pain management
  • Muscle rehabilitation
  • Neuropathy
  • Joint pain
  • Muscle spasms
  • Post-surgical muscle re-education
  • Conditions requiring improved blood circulation


  • Clean the skin area where the electrodes will be applied to remove oils, dead skin, or lotions.
  • No special fasting or medication adjustments are generally required.

Procedure Description

  1. Application of Conductive Gel or Paste:
    • The healthcare provider or patient applies a small amount of conductive gel or paste to the skin area where the electrode pads will be placed.
    • The gel is spread evenly to cover the surface area of the electrodes.
  2. Placement of Electrodes:
    • Electrode pads are placed on the gel-covered skin.
  3. Use of Electrical Device:
    • The device is then turned on, and electrical currents are adjusted to the appropriate settings as per the therapy requirements.


The application of conductive gel or paste and placement of electrodes typically takes a few minutes. The duration of the therapy session varies but generally ranges from 15 to 45 minutes.


The procedure can be performed at home, in outpatient clinics, physical therapy centers, or hospitals.


For at-home use, patients or caregivers typically perform the procedure. In clinical settings, physical therapists or healthcare providers administer the procedure.

Risks and Complications

  • Skin irritation or allergic reactions to the gel
  • Electrical burns if gel is inadequately applied
  • Discomfort or mild pain during electrical stimulation


  • Enhanced electrical conductivity, improving therapy effectiveness
  • Reduced risk of skin irritation and burns
  • Improved comfort during therapy sessions
  • Quicker achievement of desired therapeutic outcomes


  • Minimal or no recovery time
  • Patients can usually resume normal activities immediately after the session
  • Follow-up appointments may be necessary to monitor progress


  • Dry or pre-gelled electrodes: Convenient, but may not provide as even conductivity as conductive gels or pastes.
  • Ultrasound gel: Sometimes used but primarily designed for ultrasound procedures with less optimal conductivity for electrical stimulation.
Pros and Cons of Alternatives
  • Dry or Pre-gelled Electrodes:
    • Pros: Convenient, no need for separate gel application
    • Cons: May offer less effective conductivity, higher risk of skin irritation

Patient Experience

Patients typically experience a tingling or pulsing sensation during the electrical stimulation. Any discomfort should be minimal and can be managed by adjusting the device settings. Post-procedure, there may be a slight residue from the gel, which can be easily cleaned off.

Medical Policies and Guidelines for Conductive gel or paste, for use with electrical device (e.g., tens, nmes), per oz

Related policies from health plans

Similar Codes

Contact us to learn more

Choose your own adventure


Send us a message or questions and we can share more details.


Setup a calendar meeting with us; find a time now.