C83.9
⚠ Non-billable
Non-follicular (diffuse) lymphoma, unspecified
ICD-10-CM · FY2026 · Neoplasms
Code
C83.9
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Neoplasms
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code C83.9?
ICD-10-CM code C83.9 represents Non-follicular (diffuse) lymphoma, unspecified. It is a non-billable header code requiring a more specific subcategory in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.
Is C83.9 billable?
No. C83.9 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is C83.9 in?
C83.9 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.
Related codes in the C83 category
C83
Non-follicular lymphoma
Non-billable
C83.0
Small cell B-cell lymphoma
Non-billable
C83.1
Mantle cell lymphoma
Non-billable
C83.3
Diffuse large B-cell lymphoma
Non-billable
C83.5
Lymphoblastic (diffuse) lymphoma
Non-billable
C83.7
Burkitt lymphoma
Non-billable
C83.8
Other non-follicular lymphoma
Non-billable
C83.00
Small cell B-cell lymphoma, unspecified site
Billable
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