C84.96
BillableMature T/NK-cell lymphomas, unspecified, intrapelvic 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 inside the pelvis.
Coding Tips
- •Verify intrapelvic lymph node involvement through imaging studies such as CT or PET scans
- •Document specific pelvic lymph node groups if clinically documented
Clinical Significance
Mature T/NK-cell lymphomas, unspecified, involving intrapelvic lymph nodes represents unclassified T/NK-cell lymphoma with deep pelvic nodal disease. Intrapelvic lymph nodes require cross-sectional imaging for detection and can cause urinary and vascular complications. This code should prompt efforts to obtain more specific pathologic classification.
Documentation Requirements
- ✓Pathology confirming mature T-cell or NK-cell lymphoma
- ✓CT, MRI, or PET/CT documenting intrapelvic lymph node involvement
- ✓Immunophenotyping results confirming T-cell or NK-cell lineage
- ✓Specific pelvic node groups identified if possible
- ✓Clinical staging
Commonly Confused Codes
C84.93 — Mature T/NK-cell lymphoma, unspecified, intra-abdominal: Abdominal nodes above pelvic brimC84.95 — Mature T/NK-cell lymphoma, unspecified, inguinal/lower limb: Superficial groin nodesC84.46/C84.66/C84.76 — Site-specific intrapelvic codes for PTCL-NOS, ALCL ALK+ and ALCL ALK-: More specific if subtype knownC84.97 — Mature T/NK-cell lymphoma, unspecified, spleen: Separate code for splenic involvement
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.9Mature T/NK-cell lymphomas, unspecified└C84.96Mature T/NK-cell lymphomas, unspecified, intrapelvic lymph nodes
└C84.96Mature T/NK-cell lymphomas, unspecified, intrapelvic lymph nodes