2027 ICD-10-CM Diagnosis Code C82Follicular lymphoma

ICD-10-CM Codes›C00–D49›C81-C96›C82

ICD-10-CM C82
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to C82: its own notes plus those printed at block C81-C96 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • follicular lymphoma with or without diffuse areas

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

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

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue applies to 533 codes
  • Kaposi's sarcoma of lymph nodes (C46.3)
  • secondary and unspecified neoplasm of lymph nodes (C77.-)
  • secondary neoplasm of bone marrow (C79.52)
  • secondary neoplasm of spleen (C78.89)

Notes

General instructions on how these codes are used.

From Chapter 2 (C00-D49) Neoplasms applies to 1,730 codes
  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical InformationClinical

  • Lymphoma, Follicular

    malignant lymphoma in which the lymphomatous cells are clustered into identifiable nodules within the lymph nodes. the nodules resemble to some extent the germinal center of lymph node follicles and most likely represent neoplastic proliferation of lymph node-derived follicular center b-lymphocytes.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About C82Overview

What is the ICD-10 code for follicular lymphoma?

C82 is the ICD-10-CM category for follicular lymphoma, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can C82 be reported with a code from C84?

Not as a rule. The Excludes1 note on C82 lists "mature T/NK-cell lymphomas (C84.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).