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Replacement battery, lithium, for use with medically necessary home blood glucose monitor owned by patient, each

HCPCS code

Name of the Procedure:

Replacement Battery, Lithium - Home Blood Glucose Monitor (HCPCS Code: A4235)


This procedure involves replacing the lithium battery in a home blood glucose monitor, which is essential for individuals with diabetes to measure their blood sugar levels accurately.


Medical Conditions:
  • Diabetes Mellitus (Type 1 and Type 2) ##### Goals:
  • Ensure the blood glucose monitor functions properly.
  • Enable continuous monitoring of blood sugar levels to manage diabetes effectively.


  • Inaccurate blood glucose readings.
  • Device not turning on or low battery alert.
Patient Criteria:
  • Patients who own a home blood glucose monitor and have been using it regularly.
  • Individuals diagnosed with diabetes requiring frequent blood sugar monitoring.


Pre-procedure Instructions:
  • Ensure the blood glucose monitor is off before battery replacement.
  • Gather the required tools and the replacement lithium battery (compatible model).
  • No specific diagnostic tests required beforehand.

Procedure Description

  1. Turn off the Monitor: Ensure the blood glucose monitor is powered down.
  2. Locate Battery Compartment: Find the compartment, usually at the back or bottom of the device.
  3. Remove Old Battery: Open the battery compartment and carefully remove the old battery.
  4. Insert New Battery: Place the new lithium battery in the same orientation as the old one, ensuring proper contact.
  5. Close Compartment: Securely close the battery compartment.
  6. Power On Device: Turn the monitor back on to ensure it is working properly.
Equipment Used:
  • Home blood glucose monitor
  • Compatible replacement lithium battery
  • Small screwdriver or tool (if needed)
  • Not applicable.


  • Typically takes about 5-10 minutes.


  • This procedure is performed in a home setting by the patient or caregiver.


  • Performed by the patient or a caregiver.
  • No healthcare professionals are directly involved unless technical support is required.

Risks and Complications

Common Risks:
  • Incorrect battery placement, causing the device not to function.
  • Damage to the battery compartment or monitor.
Rare Risks:
  • No known serious risks.
  • Refer to the device manual or manufacturer’s support for troubleshooting.
  • Contact a healthcare provider if there are continual issues.


  • Fully operational blood glucose monitor.
  • Accurate blood sugar readings for better diabetes management.
  • Immediate benefit upon successful battery replacement.


Post-procedure Care:
  • Verify accurate operation of the blood glucose monitor by performing a test reading.
  • No special recovery instructions are necessary.
Expected Time:
  • No recovery time is required.
  • No specific follow-up needed unless device functionality issues persist.


Treatment Options:
  • Purchasing a new blood glucose monitor (if battery replacement is not successful).

    Pros and Cons:
  • Replacement Battery: Low-cost, quick fix, maintains continuity of current device usage.
  • New Device: Higher cost, potential adjustment period to a new device, but may offer updated features.

Patient Experience

During the Procedure:
  • Minimal physical exertion is required.
  • Patients should feel focused but not experience any discomfort.
After the Procedure:
  • Immediate ability to operate the blood glucose monitor.
  • Assurance of accurate blood glucose monitoring, contributing to overall diabetes care management.

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