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PAYER POLICY CHANGES

A4542 Insurance Policy Changes

HCPCS A4542 is officially defined as "Supplies and accessories for external upper limb tremor stimulator of the peripheral nerves of the wrist." HCPCS A4542 is referenced in 2 tracked payer policy changes from Medicare/CMS - Transmittals and Excellus BlueCross BlueShield. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for HCPCS A4542 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.

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REFERENCE DATA

Payers with rules5
Payers requiring prior auth5
  • Anthem BCBS · Effective November 1, 2026

    Prior authorization required

    Anthem Local PPO Precertification/Prior Authorization List (California | Anthem Blue Cross | Commercial)

  • Colorado Medicaid · Effective July 1, 2026

    Prior authorization required

    Colorado Health First Colorado Fee Schedule (Prior Authorization Needed column)

  • Elevance Health · Effective February 11, 2026

    Prior authorization required

    List of items and services that require prior authorization (Elevance CMS-0057-F list)

FREQUENTLY ASKED QUESTIONS

Does AmeriHealth Caritas require prior authorization for A4542?

AmeriHealth Caritas lists A4542 on AmeriHealth Caritas Louisiana prior authorization service list for medicaid managed plans, with conditions. Verify with the payer before scheduling.

Does Anthem BCBS require prior authorization for A4542?

Anthem BCBS lists A4542 on Anthem Local PPO Precertification/Prior Authorization List (California | Anthem Blue Cross | Commercial) for commercial plans (list dated November 1, 2026). Verify with the payer before scheduling.

Does Centene require prior authorization for A4542?

Centene lists A4542 on Sunshine Health Title XIX, Title XXI, Managed Medical Assistance CMS-0057-F prior authorization requirements for medicaid managed plans (list dated December 31, 2025). Verify with the payer before scheduling.

Does Colorado Medicaid require prior authorization for A4542?

Colorado Medicaid lists A4542 on Colorado Health First Colorado Fee Schedule (Prior Authorization Needed column) for medicaid ffs plans (list dated July 1, 2026). Verify with the payer before scheduling.

Does Elevance Health require prior authorization for A4542?

Elevance Health lists A4542 on List of items and services that require prior authorization (Elevance CMS-0057-F list) for medicare advantage plans (list dated February 11, 2026). Verify with the payer before scheduling.

What insurance policy changes affect HCPCS A4542?

There are 2 tracked policy changes affecting HCPCS A4542, including updates from Medicare/CMS - Transmittals, Excellus BlueCross BlueShield. Each change may modify coverage criteria, reimbursement rates, or prior-authorization requirements.

Which payers have updated policy for HCPCS A4542?

Payers that have issued tracked updates for HCPCS A4542 include: Medicare/CMS - Transmittals, Excellus BlueCross BlueShield.

How do I get notified when HCPCS A4542 policy changes?

Create a free account at PolicyChanges.app and save a search filtered to HCPCS A4542. You will get an email when new policy changes reference this code: daily or weekly, your choice, on every plan.

Why do payers change policies for HCPCS A4542?

Payers revise policies for individual billing codes to align with updated clinical guidelines, CMS rule changes, fraud and abuse prevention measures, or network cost-management goals. Changes can affect medical necessity criteria, place-of-service restrictions, bundling rules, or whether a code requires prior authorization.

See every payer rule for A4542

Prior authorization lists, coverage criteria, NCCI edits and Medicare coverage articles for A4542 in one place.

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