C85.84
BillableOther specified types of non-Hodgkin lymphoma, lymph nodes of axilla and upper limb
HCC Category Mapping
V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors
0.545V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 21 — Hodgkin Lymphoma and Other Cancers
0.000What This Code Means
A rare or unusual type of non-Hodgkin lymphoma affecting lymph nodes in the armpit and upper arm area.
Coding Tips
- •This code includes axillary lymph nodes and upper limb lymph nodes on one or both sides
- •Verify documentation confirms axillary and/or upper limb involvement before coding
Clinical Significance
Other specified non-Hodgkin lymphoma involving lymph nodes of axilla and upper limb captures rare, named NHL subtypes at a defined anatomical location. Accurate site-specific coding supports treatment planning, radiation field design, and outcomes tracking. These lymphoma subtypes often have distinct clinical behaviors and treatment requirements compared to common NHL types.
Documentation Requirements
- ✓Pathology confirming the specific NHL subtype by WHO classification (with immunophenotyping and molecular studies)
- ✓Imaging or clinical documentation confirming involvement of lymph nodes of axilla and upper limb
- ✓Verification that no more specific ICD-10 code exists for this NHL subtype
- ✓Staging information and treatment plan
Commonly Confused Codes
C85.80 (Other specified NHL, unspecified site) — Use the site-specific code when lymph nodes of axilla and upper limb is documentedC83.x or C82.x (specific NHL subtypes at same site) — Verify the subtype does not have its own code in C82-C84 or C86C85.88 (Other specified NHL, lymph nodes of multiple sites) — Use site-specific code for single-site involvement; use C85.88 for multiple regions
Code Hierarchy
└C85Other specified and unspecified types of non-Hodgkin lymphoma└C85.8Other specified types of non-Hodgkin lymphoma└C85.84Other specified types of non-Hodgkin lymphoma, lymph nodes of axilla and upper limb
└C85.84Other specified types of non-Hodgkin lymphoma, lymph nodes of axilla and upper limb