2026 ICD-10-CM Diagnosis Code C82Follicular lymphoma

ICD-10-CM Codes›C00–D49›C81-C96›C82

ICD-10-CM C82
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C82 is a non-billable ICD-10-CM category code for follicular lymphoma, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C82.00, C82.01, C82.02, and C82.03.

Code Identity

ICD-10-CM Code
C82
Billable Status
No — Non-Billable Category
Code Describes
Follicular lymphoma
Short Description
Follicular lymphoma
Same as the full description in the CMS dataset.
Chapter
C81-C96
Malignant neoplasms of lymphoid, hematopoietic and related tissue

Code Classification

ChapterC00–D49Neoplasms
SectionC81-C96Malignant neoplasms of lymphoid, hematopoietic and related tissue
CategoryC82Follicular lymphoma
This CodeC82Follicular lymphoma

Specific Coding for Follicular lymphomaOverview

Non-specific codes like C82 require more characters. Use one of these billable codes instead:

  • C82.0 for Follicular lymphoma grade I

  • Use C82.00 for Follicular lymphoma grade I, unspecified site

  • Use C82.01 for Follicular lymphoma grade I, lymph nodes of head, face, and neck

  • Use C82.02 for Follicular lymphoma grade I, intrathoracic lymph nodes

  • Use C82.03 for Follicular lymphoma grade I, intra-abdominal lymph nodes

  • Use C82.04 for Follicular lymphoma grade I, lymph nodes of axilla and upper limb

  • Use C82.05 for Follicular lymphoma grade I, lymph nodes of inguinal region and lower limb

  • Use C82.06 for Follicular lymphoma grade I, intrapelvic lymph nodes

  • Use C82.07 for Follicular lymphoma grade I, spleen

  • Use C82.08 for Follicular lymphoma grade I, lymph nodes of multiple sites

  • Use C82.09 for Follicular lymphoma grade I, extranodal and solid organ sites

  • Use C82.0A for Follicular lymphoma grade I, in remission

  • C82.1 for Follicular lymphoma grade II

  • Use C82.10 for Follicular lymphoma grade II, unspecified site

  • Use C82.11 for Follicular lymphoma grade II, lymph nodes of head, face, and neck

  • Use C82.12 for Follicular lymphoma grade II, intrathoracic lymph nodes

  • Use C82.13 for Follicular lymphoma grade II, intra-abdominal lymph nodes

  • Use C82.14 for Follicular lymphoma grade II, lymph nodes of axilla and upper limb

  • Use C82.15 for Follicular lymphoma grade II, lymph nodes of inguinal region and lower limb

  • Use C82.16 for Follicular lymphoma grade II, intrapelvic lymph nodes

  • Use C82.17 for Follicular lymphoma grade II, spleen

  • Use C82.18 for Follicular lymphoma grade II, lymph nodes of multiple sites

  • Use C82.19 for Follicular lymphoma grade II, extranodal and solid organ sites

  • Use C82.1A for Follicular lymphoma grade II, in remission

  • C82.2 for Follicular lymphoma grade III, unspecified

  • Use C82.20 for Follicular lymphoma grade III, unspecified, unspecified site

  • Use C82.21 for Follicular lymphoma grade III, unspecified, lymph nodes of head, face, and neck

  • Use C82.22 for Follicular lymphoma grade III, unspecified, intrathoracic lymph nodes

  • Use C82.23 for Follicular lymphoma grade III, unspecified, intra-abdominal lymph nodes

  • Use C82.24 for Follicular lymphoma grade III, unspecified, lymph nodes of axilla and upper limb

  • Use C82.25 for Follicular lymphoma grade III, unspecified, lymph nodes of inguinal region and lower limb

  • Use C82.26 for Follicular lymphoma grade III, unspecified, intrapelvic lymph nodes

  • Use C82.27 for Follicular lymphoma grade III, unspecified, spleen

  • Use C82.28 for Follicular lymphoma grade III, unspecified, lymph nodes of multiple sites

  • Use C82.29 for Follicular lymphoma grade III, unspecified, extranodal and solid organ sites

  • Use C82.2A for Follicular lymphoma grade III, unspecified, in remission

  • C82.3 for Follicular lymphoma grade IIIa

  • Use C82.30 for Follicular lymphoma grade IIIa, unspecified site

  • Use C82.31 for Follicular lymphoma grade IIIa, lymph nodes of head, face, and neck

  • Use C82.32 for Follicular lymphoma grade IIIa, intrathoracic lymph nodes

  • Use C82.33 for Follicular lymphoma grade IIIa, intra-abdominal lymph nodes

  • Use C82.34 for Follicular lymphoma grade IIIa, lymph nodes of axilla and upper limb

  • Use C82.35 for Follicular lymphoma grade IIIa, lymph nodes of inguinal region and lower limb

  • Use C82.36 for Follicular lymphoma grade IIIa, intrapelvic lymph nodes

  • Use C82.37 for Follicular lymphoma grade IIIa, spleen

  • Use C82.38 for Follicular lymphoma grade IIIa, lymph nodes of multiple sites

  • Use C82.39 for Follicular lymphoma grade IIIa, extranodal and solid organ sites

  • Use C82.3A for Follicular lymphoma grade IIIa, in remission

  • C82.4 for Follicular lymphoma grade IIIb

  • Use C82.40 for Follicular lymphoma grade IIIb, unspecified site

  • Use C82.41 for Follicular lymphoma grade IIIb, lymph nodes of head, face, and neck

  • Use C82.42 for Follicular lymphoma grade IIIb, intrathoracic lymph nodes

  • Use C82.43 for Follicular lymphoma grade IIIb, intra-abdominal lymph nodes

  • Use C82.44 for Follicular lymphoma grade IIIb, lymph nodes of axilla and upper limb

  • Use C82.45 for Follicular lymphoma grade IIIb, lymph nodes of inguinal region and lower limb

  • Use C82.46 for Follicular lymphoma grade IIIb, intrapelvic lymph nodes

  • Use C82.47 for Follicular lymphoma grade IIIb, spleen

  • Use C82.48 for Follicular lymphoma grade IIIb, lymph nodes of multiple sites

  • Use C82.49 for Follicular lymphoma grade IIIb, extranodal and solid organ sites

  • Use C82.4A for Follicular lymphoma grade IIIb, in remission

  • C82.5 for Diffuse follicle center lymphoma

  • Use C82.50 for Diffuse follicle center lymphoma, unspecified site

  • Use C82.51 for Diffuse follicle center lymphoma, lymph nodes of head, face, and neck

  • Use C82.52 for Diffuse follicle center lymphoma, intrathoracic lymph nodes

  • Use C82.53 for Diffuse follicle center lymphoma, intra-abdominal lymph nodes

  • Use C82.54 for Diffuse follicle center lymphoma, lymph nodes of axilla and upper limb

  • Use C82.55 for Diffuse follicle center lymphoma, lymph nodes of inguinal region and lower limb

  • Use C82.56 for Diffuse follicle center lymphoma, intrapelvic lymph nodes

  • Use C82.57 for Diffuse follicle center lymphoma, spleen

  • Use C82.58 for Diffuse follicle center lymphoma, lymph nodes of multiple sites

  • Use C82.59 for Diffuse follicle center lymphoma, extranodal and solid organ sites

  • Use C82.5A for Diffuse follicle center lymphoma, in remission

  • C82.6 for Cutaneous follicle center lymphoma

  • Use C82.60 for Cutaneous follicle center lymphoma, unspecified site

  • Use C82.61 for Cutaneous follicle center lymphoma, lymph nodes of head, face, and neck

  • Use C82.62 for Cutaneous follicle center lymphoma, intrathoracic lymph nodes

  • Use C82.63 for Cutaneous follicle center lymphoma, intra-abdominal lymph nodes

  • Use C82.64 for Cutaneous follicle center lymphoma, lymph nodes of axilla and upper limb

  • Use C82.65 for Cutaneous follicle center lymphoma, lymph nodes of inguinal region and lower limb

  • Use C82.66 for Cutaneous follicle center lymphoma, intrapelvic lymph nodes

  • Use C82.67 for Cutaneous follicle center lymphoma, spleen

  • Use C82.68 for Cutaneous follicle center lymphoma, lymph nodes of multiple sites

  • Use C82.69 for Cutaneous follicle center lymphoma, extranodal and solid organ sites

  • Use C82.6A for Cutaneous follicle center lymphoma, in remission

  • C82.8 for Other types of follicular lymphoma

  • Use C82.80 for Other types of follicular lymphoma, unspecified site

  • Use C82.81 for Other types of follicular lymphoma, lymph nodes of head, face, and neck

  • Use C82.82 for Other types of follicular lymphoma, intrathoracic lymph nodes

  • Use C82.83 for Other types of follicular lymphoma, intra-abdominal lymph nodes

  • Use C82.84 for Other types of follicular lymphoma, lymph nodes of axilla and upper limb

  • Use C82.85 for Other types of follicular lymphoma, lymph nodes of inguinal region and lower limb

  • Use C82.86 for Other types of follicular lymphoma, intrapelvic lymph nodes

  • Use C82.87 for Other types of follicular lymphoma, spleen

  • Use C82.88 for Other types of follicular lymphoma, lymph nodes of multiple sites

  • Use C82.89 for Other types of follicular lymphoma, extranodal and solid organ sites

  • Use C82.8A for Other types of follicular lymphoma, in remission

  • C82.9 for Follicular lymphoma, unspecified

  • Use C82.90 for Follicular lymphoma, unspecified, unspecified site

  • Use C82.91 for Follicular lymphoma, unspecified, lymph nodes of head, face, and neck

  • Use C82.92 for Follicular lymphoma, unspecified, intrathoracic lymph nodes

  • Use C82.93 for Follicular lymphoma, unspecified, intra-abdominal lymph nodes

  • Use C82.94 for Follicular lymphoma, unspecified, lymph nodes of axilla and upper limb

  • Use C82.95 for Follicular lymphoma, unspecified, lymph nodes of inguinal region and lower limb

  • Use C82.96 for Follicular lymphoma, unspecified, intrapelvic lymph nodes

  • Use C82.97 for Follicular lymphoma, unspecified, spleen

  • Use C82.98 for Follicular lymphoma, unspecified, lymph nodes of multiple sites

  • Use C82.99 for Follicular lymphoma, unspecified, extranodal and solid organ sites

  • Use C82.9A for Follicular lymphoma, unspecified, in remission

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • follicular lymphoma with or without diffuse areas

Type 1 Excludes

  • mature T/NK-cell lymphomas C84
  • personal history of non-Hodgkin lymphoma Z85.72

Patient EducationClinical

Lymphoma

Lymphoma is a cancer of a part of the immune system called the lymph system. There are many types of lymphoma. One type is Hodgkin disease. The rest are called non-Hodgkin lymphomas.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C82Overview

Is C82 (Follicular lymphoma) a billable code?

No. This is a category header that groups the codes for follicular lymphoma, and headers cannot be submitted on claims. Claims for follicular lymphoma need a more specific code from this category, such as C82.00, C82.01, and C82.02.