C84.93
BillableMature T/NK-cell lymphomas, unspecified, 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 mature T-cell or natural killer cell lymphoma affecting the lymph nodes in the abdominal cavity.
Coding Tips
- •Confirm intra-abdominal lymph node involvement through imaging studies or surgical findings
- •Document specific abdominal lymph node groups involved if available for clinical clarity
Clinical Significance
Mature T/NK-cell lymphomas, unspecified, involving intra-abdominal lymph nodes captures unclassified T/NK-cell lymphoma with abdominal nodal disease. Abdominal involvement can present with pain, obstruction, or constitutional symptoms. This code emphasizes the need for further pathologic workup to determine the specific T-cell lymphoma subtype for optimal treatment selection.
Documentation Requirements
- ✓Pathology confirming mature T-cell or NK-cell lymphoma lineage
- ✓Abdominal imaging documenting lymph node involvement
- ✓Immunophenotyping results showing T-cell or NK-cell markers
- ✓Documentation of why further subtype classification was not possible
- ✓Clinical staging
Commonly Confused Codes
C84.43 — PTCL-NOS, intra-abdominal: More specific diagnosis of exclusionC84.63/C84.73 — ALCL ALK-positive/negative, intra-abdominal: Specific subtype if ALCL morphology confirmedC86.2 — Enteropathy-associated T-cell lymphoma: Specific GI-associated T-cell lymphomaC84.97 — Mature T/NK-cell lymphoma, unspecified, spleen: Splenic involvement has its own code
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.9Mature T/NK-cell lymphomas, unspecified└C84.93Mature T/NK-cell lymphomas, unspecified, intra-abdominal lymph nodes
└C84.93Mature T/NK-cell lymphomas, unspecified, intra-abdominal lymph nodes