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HumanaMedicaid · Prior Auth · Medicaid · OH · OncologyMedium impact

Margenza (margetuximab-cmkb) (Revised)

Act
by Nov 1, 2025
Effective date
Nov 1, 2025
Identified
Sep 26, 2026

Summary

Humana Medicaid Ohio has revised its prior authorization policy for Margenza (margetuximab-cmkb), a HER2-positive metastatic breast cancer treatment. The policy requires prior authorization and specifies that coverage applies only to patients with metastatic HER2-positive breast cancer who have received at least two prior anti-HER2 therapies (with one in the metastatic setting) and are receiving Margenza in combination with specific chemotherapy agents. Claims will be denied if the patient experiences disease progression on Margenza.

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What to do

by Nov 1, 2025 · 6 steps
01Billing team must update system to require prior authorization for Margenza (margetuximab-cmkb) HCPCS code J9348 for all Medicaid Ohio claims.
02Establish clinical criteria validation in billing workflow: verify member has metastatic HER2-positive breast cancer, has received minimum two prior anti-HER2 therapies (at least one in metastatic setting), and is receiving combination chemotherapy (gemcitabine, eribulin, vinorelbine, or capecitabine).
03Update prior authorization submission templates to require HER2 testing documentation per 2018 ASCO-CAP guidelines (IHC 3+, IHC 2+ with ISH confirmation, or ISH results).
04Configure system to flag and deny claims if disease progression on Margenza is documented.
05Train billing staff to reject claims missing required clinical documentation.
06Update encounter forms and provider alerts to communicate new requirements.
If missed: Failure to obtain prior authorization or submit incomplete clinical documentation will result in claim denials.

Codes mentioned

J9348

Original notice

Margenza (margetuximab-cmkb) (Revised)
mcp.humana.com · Always check the source before changing claims.
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