C83.06

Billable

Small cell B-cell lymphoma, intrapelvic lymph nodes

HCC Category Mapping

V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors

0.545

V24HCC 10 — Lymphoma and Other Cancers

0.675

ESRDHCC 10 — Lymphoma and Other Cancers

0.000

RxHCCHCC 21 — Hodgkin Lymphoma and Other Cancers

0.000

What This Code Means

This is a type of cancer that starts in B-cells (a type of white blood cell) and forms small tumors in the lymph nodes located in the pelvis area. It is an aggressive form of lymphoma that requires prompt treatment.

Coding Tips

•Verify the specific anatomical site (intrapelvic lymph nodes) is documented in the medical record before assigning this code, as lymphoma codes are site-specific
•Ensure you have confirmed the histological type as 'small cell B-cell lymphoma' and not other lymphoma subtypes, as this affects code selection and treatment planning

Clinical Significance

Small cell B-cell lymphoma of intrapelvic lymph nodes involves deeper lymph node chains within the pelvis (iliac, obturator, sacral nodes). This location may cause urinary or bowel symptoms and is typically identified on cross-sectional imaging rather than physical examination, making imaging documentation critical for code assignment.

Documentation Requirements

✓Pathology-confirmed small cell B-cell lymphoma diagnosis
✓CT or MRI pelvis documenting intrapelvic lymph node involvement
✓Specific pelvic node groups identified (iliac, obturator, sacral, presacral)
✓Symptoms related to pelvic mass effect if applicable
✓Staging documentation (Ann Arbor with any bulk disease notation)

Commonly Confused Codes

C83.05 — Inguinal region and lower limb; inguinal nodes are superficial/external while intrapelvic nodes are deep within the pelvis C83.03 — Intra-abdominal lymph nodes; the pelvic brim serves as the dividing line between abdominal and pelvic nodes C83.09 — Extranodal/solid organ sites; pelvic organ involvement (bladder, uterus) is extranodal, not intrapelvic nodal

Code Hierarchy

└C83Non-follicular lymphoma └C83.0Small cell B-cell lymphoma └C83.06Small cell B-cell lymphoma, intrapelvic lymph nodes

└C83.06Small cell B-cell lymphoma, intrapelvic lymph nodes