AmeriHealth implements biosimilar changes for Medicare Part D formulary

Effective January 1, 2026, AmeriHealth Insurance Company of New Jersey (AmeriHealth) will be implementing the following updates to its Medicare Part D drug program:

  • Adalimumab-AACF will be the preferred biosimilar for Humira® (adalimumab).
  • Tyenne (tocilizumab-aazg) will be the preferred biosimilar for Actemra® (tocilizumab).

How will this affect your patients (our members)?

Humira

  • Pharmacy Benefit:
    • Humira will be removed from the AmeriHealth Medicare Part D formulary and designated as non-formulary.
    • The preferred adalimumab product will be adalimumab-AACF, a lower-cost biosimilar of Humira. Members were notified of this change by mail.
    • All existing authorizations for Humira will be transitioned to adalimumab-AACF beginning January 1, 2026.

Actemra 

  • Pharmacy Benefit:
    • Actemra will be removed from the AmeriHealth Medicare Part D formulary and designated as non-formulary.
    • The preferred tocilizumab product will be Tyenne (tocilizumab-aazg), a lower-cost biosimilar of Actemra. We notified our members of this change by mail.
    • All existing authorizations for Actemra will be transitioned to Tyenne beginning January 1, 2026.​

Learn more

For more information about biosimilar and formulary changes, visit the Pharmacy Resource page

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