C84.49

Billable

Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites

HCC Category Mapping

V28HCC 19 — Lymphoma and Other Cancers

0.105

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 cancer affecting T-cells that is not classified elsewhere, involving organs outside the lymph node system or solid organs.

Coding Tips

•Identify and document the specific extranodal or solid organ sites involved
•Distinguish between nodal and extranodal involvement for accurate coding

Clinical Significance

Peripheral T-cell lymphoma not elsewhere classified involving extranodal and solid organ sites signifies disease occurring outside of the lymph node system, such as in the liver, lungs, bone, gastrointestinal tract, or skin. Extranodal involvement often indicates advanced disease and may require additional diagnostic workup. This code is important for distinguishing organ-based disease from purely nodal presentations.

Documentation Requirements

✓Pathology confirming PTCL-NOS in extranodal tissue with T-cell immunophenotype
✓Identification of the specific organ or extranodal site involved
✓Biopsy of the extranodal site confirming lymphoma rather than reactive changes
✓Imaging documenting the extent of extranodal disease
✓Exclusion of more specific extranodal T-cell lymphoma subtypes (enteropathy-associated, hepatosplenic, subcutaneous panniculitis-like)

Commonly Confused Codes

C84.47 — PTCL-NOS, spleen: Spleen has its own specific code and should not be coded as extranodal C86.0 — Extranodal NK/T-cell lymphoma, nasal type: A specific extranodal subtype associated with Epstein-Barr virus, not PTCL-NOS C86.1 — Hepatosplenic T-cell lymphoma: A specific extranodal subtype, not PTCL-NOS C86.2 — Enteropathy-associated T-cell lymphoma: Specific GI-based T-cell lymphoma associated with celiac disease C84.48 — PTCL-NOS, multiple sites: C84.49 is for extranodal involvement; C84.48 is for multiple lymph node regions

Code Hierarchy

└C84Mature T/NK-cell lymphomas └C84.4Peripheral T-cell lymphoma, not elsewhere classified └C84.49Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites

└C84.49Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites