C83.99
BillableNon-follicular (diffuse) lymphoma, unspecified, extranodal and solid organ sites
HCC Category Mapping
V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors
0.545V24HCC 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 type of blood cancer (non-follicular lymphoma) that has spread to organs or tissues outside the lymph node system.
Coding Tips
- •This code applies to extranodal sites (organs like liver, lungs, GI tract) or solid organ involvement
- •Clearly document which specific organs or tissues are involved in the pathology or imaging reports
Clinical Significance
Non-follicular (diffuse) lymphoma, unspecified type, at extranodal and solid organ sites indicates lymphoma involvement of organs outside the lymph node system where the specific subtype has not been determined. Extranodal lymphoma can affect virtually any organ and often requires organ-specific management approaches in addition to systemic lymphoma treatment. Subtype identification is critical for optimal treatment selection.
Documentation Requirements
- ✓Documentation of specific extranodal organs involved
- ✓Imaging or biopsy confirming organ involvement
- ✓Pathology report — query for specific subtype if not yet determined
- ✓Staging reflecting extranodal disease
- ✓Organ-specific treatment considerations
Commonly Confused Codes
C83.89 — Other non-follicular lymphoma, extranodal: C83.89 is for a known 'other' subtype; C83.99 is for unspecified subtypeC83.98 — Non-follicular lymphoma, unspecified, multiple sites: C83.98 is for multiple lymph node sites; C83.99 is for non-nodal organ involvementC78-C79 series — Secondary malignant neoplasms: Do not use metastasis codes for lymphoma organ involvement
Code Hierarchy
└C83Non-follicular lymphoma└C83.9Non-follicular (diffuse) lymphoma, unspecified└C83.99Non-follicular (diffuse) lymphoma, unspecified, extranodal and solid organ sites
└C83.99Non-follicular (diffuse) lymphoma, unspecified, extranodal and solid organ sites