C82.16

Billable

Follicular lymphoma grade II, 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

A type of slow-growing blood cancer (follicular lymphoma) that is grade II and located in the lymph nodes in the pelvis area.

Coding Tips

•Verify the grade (II) and anatomical site (intrapelvic) are documented in the pathology report
•Do not use this code if the lymphoma is in remission; use C82.1A instead

Clinical Significance

Follicular lymphoma grade II involving intrapelvic lymph nodes indicates deep pelvic nodal disease identified on cross-sectional imaging. Deep pelvic involvement may cause genitourinary or lower GI symptoms due to mass effect. This code distinguishes deep pelvic nodes (iliac, obturator, presacral) from superficial inguinal nodes.

Documentation Requirements

✓Pathology confirming grade II follicular lymphoma
✓CT or PET/CT documenting intrapelvic lymph node involvement
✓Specific pelvic node chains involved (common iliac, external iliac, internal iliac, obturator, presacral)
✓Assessment for compressive symptoms (urinary retention, lower extremity edema)
✓Staging and treatment documentation

Commonly Confused Codes

C82.15 — Inguinal/lower limb nodes; superficial groin nodes, not deep pelvic C82.13 — Intra-abdominal nodes; above the pelvic brim, distinct from intrapelvic C82.06 — Grade I, intrapelvic; verify grade C82.1A — Grade II in remission; use only when remission is documented

Code Hierarchy

└C82Follicular lymphoma └C82.1Follicular lymphoma grade II └C82.16Follicular lymphoma grade II, intrapelvic lymph nodes

└C82.16Follicular lymphoma grade II, intrapelvic lymph nodes