C83.0 Small cell B-cell lymphoma

⚠ Non-Billable ICD-10-CM 2026
Open C83.0 in Web App →

The ICD-10-CM code for Small cell B-cell lymphoma is C83.0 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
C81-C96: Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
Category C83
87 codes (78 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to C83.0:

  • Immunocytoma
  • Lymphoma (of) (malignant) › small cell B-cell
  • Lymphoma (of) (malignant) › non-leukemic variant of B-CLL
  • Lymphoma (of) (malignant) › lymphoplasmacytic
  • Lymphoma (of) (malignant) › splenic marginal zone
  • Lymphoma (of) (malignant) › nodal marginal zone
Excludes1
Not coded here. These conditions should NOT be coded together with C83.0.
  • chronic lymphocytic leukemia (C91.1)
  • mature T/NK-cell lymphomas (C84.-)
  • Waldenström macroglobulinemia (C88.00)

Inclusion Terms

  • Lymphoplasmacytic lymphoma
  • Nodal marginal zone lymphoma
  • Non-leukemic variant of B-CLL
  • Splenic marginal zone lymphoma

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.a
Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

C83 Non-follicular lymphoma

More Specific Codes

C83.00 Small cell B-cell lymphoma, unspecified site C83.01 Small cell B-cell lymphoma, lymph nodes of head, face, and neck C83.02 Small cell B-cell lymphoma, intrathoracic lymph nodes C83.03 Small cell B-cell lymphoma, intra-abdominal lymph nodes C83.04 Small cell B-cell lymphoma, lymph nodes of axilla and upper limb C83.05 Small cell B-cell lymphoma, lymph nodes of inguinal region and lower limb C83.06 Small cell B-cell lymphoma, intrapelvic lymph nodes C83.07 Small cell B-cell lymphoma, spleen C83.08 Small cell B-cell lymphoma, lymph nodes of multiple sites C83.09 Small cell B-cell lymphoma, extranodal and solid organ sites C83.0A Small cell B-cell lymphoma, in remission

Related Codes in C83

C83 Non-follicular lymphoma C83.00 Small cell B-cell lymphoma, unspecified site C83.01 Small cell B-cell lymphoma, lymph nodes of head, face, and neck C83.02 Small cell B-cell lymphoma, intrathoracic lymph nodes C83.03 Small cell B-cell lymphoma, intra-abdominal lymph nodes C83.04 Small cell B-cell lymphoma, lymph nodes of axilla and upper limb C83.05 Small cell B-cell lymphoma, lymph nodes of inguinal region and lower limb C83.06 Small cell B-cell lymphoma, intrapelvic lymph nodes C83.07 Small cell B-cell lymphoma, spleen C83.08 Small cell B-cell lymphoma, lymph nodes of multiple sites C83.09 Small cell B-cell lymphoma, extranodal and solid organ sites C83.0A Small cell B-cell lymphoma, in remission C83.1 Mantle cell lymphoma C83.10 Mantle cell lymphoma, unspecified site C83.11 Mantle cell lymphoma, lymph nodes of head, face, and neck C83.12 Mantle cell lymphoma, intrathoracic lymph nodes C83.13 Mantle cell lymphoma, intra-abdominal lymph nodes C83.14 Mantle cell lymphoma, lymph nodes of axilla and upper limb C83.15 Mantle cell lymphoma, lymph nodes of inguinal region and lower limb C83.16 Mantle cell lymphoma, intrapelvic lymph nodes
Search all 70,000+ ICD-10-CM codes →
Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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