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C83.0

⚠ Non-billable (Header)

Small cell B-cell lymphoma

Neoplasms (C00-D49)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Lymphoplasmacytic lymphomaNodal marginal zone lymphomaNon-leukemic variant of B-CLLSplenic marginal zone lymphoma

❌ Excludes1

direct

Cannot be coded with C83.0

• chronic lymphocytic leukemia (C91.1)
• mature T/NK-cell lymphomas (C84.-)
• Waldenström macroglobulinemia (C88.00)

❌ Excludes1

inherited from C83

Rules from parent category C83: Non-follicular lymphoma

• personal history of non-Hodgkin lymphoma (Z85.72)

Child Codes (11)

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

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Code Information

CodeC83.0

BillableNo — Header code

ParentC83

CategoryNeoplasms (C00-D49)

Excludes14 rule(s)

Excludes20 note(s)

Child codes11

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)