C82.31
✓ Billable
Follicular lymphoma grade IIIa, lymph nodes of head, face, and neck
ICD-10-CM · FY2026 · Neoplasms
Code
C82.31
System
ICD-10-CM
Billable
Yes — valid for submission
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 C82.31?
ICD-10-CM code C82.31 represents Follicular lymphoma grade IIIa, lymph nodes of head, face, and neck. It is a billable diagnosis code in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.
Is C82.31 billable?
Yes. C82.31 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is C82.31 in?
C82.31 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.
Related codes in the C82 category
C82
Follicular lymphoma
Non-billable
C82.0
Follicular lymphoma grade I
Non-billable
C82.1
Follicular lymphoma grade II
Non-billable
C82.2
Follicular lymphoma grade III, unspecified
Non-billable
C82.3
Follicular lymphoma grade IIIa
Non-billable
C82.4
Follicular lymphoma grade IIIb
Non-billable
C82.5
Diffuse follicle center lymphoma
Non-billable
C82.6
Cutaneous follicle center lymphoma
Non-billable
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