C83.53
BillableLymphoblastic (diffuse) lymphoma, intra-abdominal lymph nodes
HCC Category Mapping
V28HCC 20 — Lung and Other Severe Cancers
0.000V24HCC 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 type of blood cancer affecting immature lymphoid cells located in the lymph nodes within the abdominal cavity.
Coding Tips
- •Ensure documentation specifies intra-abdominal lymph node involvement, not other abdominal organs
- •This includes retroperitoneal and mesenteric lymph nodes
Clinical Significance
Lymphoblastic lymphoma of intra-abdominal lymph nodes is an uncommon presentation for this lymphoma subtype. When present, abdominal involvement may indicate B-cell lineage (more common in abdominal sites) rather than T-cell lineage. Rapid progression typical of lymphoblastic lymphoma requires urgent staging and treatment initiation.
Documentation Requirements
- ✓Pathology confirmation with TdT and lineage-specific markers
- ✓CT abdomen documenting intra-abdominal lymph node involvement
- ✓Specific node groups identified (mesenteric, retroperitoneal)
- ✓Bone marrow biopsy results
- ✓CNS evaluation for occult CNS involvement
Commonly Confused Codes
C83.33 — DLBCL, intra-abdominal; mature vs. immature precursor distinctionC83.73 — Burkitt lymphoma, intra-abdominal; Burkitt is the most common GI lymphoma presentationC83.13 — Mantle cell lymphoma, intra-abdominal; mantle cell also frequently involves abdominal nodesC91.00 — Acute lymphoblastic leukemia; requires bone marrow blast assessment