HCPCS J-code
J9358: fam-trastuzumab deruxtecan
Trastuzumab deruxtecan 1 mg (HER2 ADC)
Code
J9358
Generic
fam-trastuzumab deruxtecan
Brands
Enhertu
Drug class
Biologic drugs (mAbs and biosimilars)
Common denial patterns
- HER2+ confirmed
Frequently asked questions
What is HCPCS J9358?
Trastuzumab deruxtecan 1 mg (HER2 ADC)
Why does insurance commonly deny J9358?
HER2+ confirmed.
What brand-name drug uses J9358?
Enhertu.
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