G9835 Trastuzumab administered within 12 months of diagnosis

Short descriptor: Trastuz given w/in 12 mos dx

⚠ Terminated HCPCS Level II 2026
Terminated Code
G9835 was terminated as of 2020-12-31 and should not be reported for dates of service after that date. This page is retained for historical reference.
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G9835 is the HCPCS Level II code for Trastuzumab administered within 12 months of diagnosis (2026). It belongs to Section G — Procedures / Professional Services (Temporary). Under Medicare, its coverage status is: Carrier judgment. Part B pricing methodology: Not separately priced by Part B.

Classification & CMS Attributes

Medicare Coverage
Carrier judgment (code C)
Part B Pricing
Not separately priced by Part B (indicator 00)
Type of Service
Medical care
Effective Date
2021-01-01
Termination Date
2020-12-31
2026 Maintenance
No change this year

References

Cite This Page

Reference G9835 with the canonical source and edition:

G9835 — Trastuzumab administered within 12 months of diagnosis. ICD-10 Coding Pro (HCPCS Level II 2026). https://icd10codingpro.com/hcpcs-codes/G9835

Canonical URL: https://icd10codingpro.com/hcpcs-codes/G9835

Related Codes in Section G

← G9834 Pt met dis at dx G9836 → Rsn no trast given doc
G9831 Ajcc stg brt ca dx ii or iii G9832 Br ca stg = 1 t stg = t1c G9833 Transf pract aft init chemo G9834 Pt met dis at dx G9836 Rsn no trast given doc G9837 Trastuz not in 12 mos dx G9838 Pt met dis at dx G9839 Anti-egfr mon anti ther G9840 Gene testing performed G9841 Gene testing not performed
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2026-01-01

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