G9844 HCPCS Level II Code: Patient did not receive anti-egfr monoclonal antibody therapy
Medicare Coverage & Payment
- CMS short descriptor: Pt no recd anti-egfr ther
- Medicare coverage: Carrier judgment (CMS coverage code C)
- Payment category: Service not separately priced (pricing indicator 00)
- BETOS: Z2 — Undefined codes
- Last CMS action effective: January 1, 2017
Source: CMS HCPCS Level II release. Coverage codes indicate how Medicare treats the code, not whether a specific claim will be paid; payer policy and documentation still govern.
Contextual Map
Every relationship of G9844 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)
- G9824 — Endometrial sampling or hysteroscopy with biopsy and results not documented during the 12 months prior to the index date (exclusive of the index date) of the endometrial ablation[Sibling]— CMS HCPCS Level II code set
- G9825 — Her-2/neu negative or undocumented/unknown[Sibling]— CMS HCPCS Level II code set
- G9826 — Patient transferred to practice after initiation of chemotherapy[Sibling]— CMS HCPCS Level II code set
- G9827 — Her2-targeted therapies not administered during the initial course of treatment[Sibling]— CMS HCPCS Level II code set
- G9828 — Her2-targeted therapies administered during the initial course of treatment[Sibling]— CMS HCPCS Level II code set
- G9829 — Breast adjuvant chemotherapy administered[Sibling]— CMS HCPCS Level II code set
- G9830 — Her-2/neu positive[Sibling]— CMS HCPCS Level II code set
- G9831 — Ajcc stage at breast cancer diagnosis = ii or iii[Sibling]— CMS HCPCS Level II code set
- and 32 more
Change history
- January 1, 2017 — Added to the code set [Change history]— CMS release files (code change ledger)
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
Change history
- January 1, 2017Added to the code setPatient did not receive anti-egfr monoclonal antibody therapy
Nearest Codes in This Family
Official HCPCS Level II classifications closest to G9844 in its code family, with their registry titles.
- G9839 — Anti-egfr monoclonal antibody therapy
- G9840 — Ras (kras and nras) gene mutation testing performed before initiation of anti-egfr moab
- G9841 — Ras (kras and nras) gene mutation testing not performed before initiation of anti-egfr moab
- G9842 — Patient has metastatic disease at diagnosis
- G9843 — Ras (kras or nras) gene mutation
- G9845 — Patient received anti-egfr monoclonal antibody therapy
- G9846 — Patients who died from cancer
- G9847 — Patient received systemic cancer-directed therapy in the last 14 days of life
- G9848 — Patient did not receive systemic cancer-directed therapy in the last 14 days of life
- G9849 — Patients who died from cancer