G9855 HCPCS Level II Code: Patients who died from cancer

Contextual Map

Every relationship of G9855 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Nearest codes (40)

• G9835 — Trastuzumab administered within 12 months of diagnosis[Sibling]— CMS HCPCS Level II code set
• G9836 — Reason for not administering trastuzumab documented (e.g. patient declined, patient died, patient transferred, contraindication or other clinical exclusion, neoadjuvant chemotherapy or radiation not complete)[Sibling]— CMS HCPCS Level II code set
• G9837 — Trastuzumab not administered within 12 months of diagnosis[Sibling]— CMS HCPCS Level II code set
• G9838 — Patient has metastatic disease at diagnosis[Sibling]— CMS HCPCS Level II code set
• G9839 — Anti-egfr monoclonal antibody therapy[Sibling]— CMS HCPCS Level II code set
• G9840 — Ras (kras and nras) gene mutation testing performed before initiation of anti-egfr moab[Sibling]— CMS HCPCS Level II code set
• G9841 — Ras (kras and nras) gene mutation testing not performed before initiation of anti-egfr moab[Sibling]— CMS HCPCS Level II code set
• G9842 — Patient has metastatic disease at diagnosis[Sibling]— CMS HCPCS Level II code set
• and 32 more

Change history (2)

• January 1, 2021 — Removed from the code set [Change history]— CMS release files (code change ledger)
• and 1 more

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, descriptors, coverage and pricing attributes Official source data

CMS HCPCS Alpha-Numeric (ANWEB) release — July 2026 quarterly update Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS HCPCS quarterly update files, ingested into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official HCPCS Level II classifications closest to G9855 in its code family, with their registry titles.

• G9850 — Patient had more than one emergency department visit in the last 30 days of life
• G9851 — Patient had one or less emergency department visits in the last 30 days of life
• G9852 — Patients who died from cancer
• G9853 — Patient admitted to the icu in the last 30 days of life
• G9854 — Patient was not admitted to the icu in the last 30 days of life
• G9856 — Patient was not admitted to hospice
• G9857 — Patient admitted to hospice
• G9858 — Patient enrolled in hospice
• G9859 — Patients who died from cancer
• G9860 — Patient spent less than three days in hospice care