Follicular lymphoma (C82) ICD-10-CM
The C82 code range covers follicular lymphoma with 109 ICD-10-CM diagnosis codes. 99 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- follicular lymphoma with or without diffuse areas
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the C82 Range 109 codes · 99 billable
- C82 Follicular lymphomaNon-billable
- C82.0 Follicular lymphoma grade INon-billable
- C82.00 Follicular lymphoma grade I, unspecified site
- C82.01 Follicular lymphoma grade I, lymph nodes of head, face, and neck
- C82.02 Follicular lymphoma grade I, intrathoracic lymph nodes
- C82.03 Follicular lymphoma grade I, intra-abdominal lymph nodes
- C82.04 Follicular lymphoma grade I, lymph nodes of axilla and upper limb
- C82.05 Follicular lymphoma grade I, lymph nodes of inguinal region and lower limb
- C82.06 Follicular lymphoma grade I, intrapelvic lymph nodes
- C82.07 Follicular lymphoma grade I, spleen
- C82.08 Follicular lymphoma grade I, lymph nodes of multiple sites
- C82.09 Follicular lymphoma grade I, extranodal and solid organ sites
- C82.0A Follicular lymphoma grade I, in remission
- C82.1 Follicular lymphoma grade IINon-billable
- C82.10 Follicular lymphoma grade II, unspecified site
- C82.11 Follicular lymphoma grade II, lymph nodes of head, face, and neck
- C82.12 Follicular lymphoma grade II, intrathoracic lymph nodes
- C82.13 Follicular lymphoma grade II, intra-abdominal lymph nodes
- C82.14 Follicular lymphoma grade II, lymph nodes of axilla and upper limb
- C82.15 Follicular lymphoma grade II, lymph nodes of inguinal region and lower limb
- C82.16 Follicular lymphoma grade II, intrapelvic lymph nodes
- C82.17 Follicular lymphoma grade II, spleen
- C82.18 Follicular lymphoma grade II, lymph nodes of multiple sites
- C82.19 Follicular lymphoma grade II, extranodal and solid organ sites
- C82.1A Follicular lymphoma grade II, in remission
- C82.2 Follicular lymphoma grade III, unspecifiedNon-billable
- C82.20 Follicular lymphoma grade III, unspecified, unspecified site
- C82.21 Follicular lymphoma grade III, unspecified, lymph nodes of head, face, and neck
- C82.22 Follicular lymphoma grade III, unspecified, intrathoracic lymph nodes
- C82.23 Follicular lymphoma grade III, unspecified, intra-abdominal lymph nodes
- C82.24 Follicular lymphoma grade III, unspecified, lymph nodes of axilla and upper limb
- C82.25 Follicular lymphoma grade III, unspecified, lymph nodes of inguinal region and lower limb
- C82.26 Follicular lymphoma grade III, unspecified, intrapelvic lymph nodes
- C82.27 Follicular lymphoma grade III, unspecified, spleen
- C82.28 Follicular lymphoma grade III, unspecified, lymph nodes of multiple sites
- C82.29 Follicular lymphoma grade III, unspecified, extranodal and solid organ sites
- C82.2A Follicular lymphoma grade III, unspecified, in remission
- C82.3 Follicular lymphoma grade IIIaNon-billable
- C82.30 Follicular lymphoma grade IIIa, unspecified site
- C82.31 Follicular lymphoma grade IIIa, lymph nodes of head, face, and neck
- C82.32 Follicular lymphoma grade IIIa, intrathoracic lymph nodes
- C82.33 Follicular lymphoma grade IIIa, intra-abdominal lymph nodes
- C82.34 Follicular lymphoma grade IIIa, lymph nodes of axilla and upper limb
- C82.35 Follicular lymphoma grade IIIa, lymph nodes of inguinal region and lower limb
- C82.36 Follicular lymphoma grade IIIa, intrapelvic lymph nodes
- C82.37 Follicular lymphoma grade IIIa, spleen
- C82.38 Follicular lymphoma grade IIIa, lymph nodes of multiple sites
- C82.39 Follicular lymphoma grade IIIa, extranodal and solid organ sites
- C82.3A Follicular lymphoma grade IIIa, in remission
- C82.4 Follicular lymphoma grade IIIbNon-billable
- C82.40 Follicular lymphoma grade IIIb, unspecified site
- C82.41 Follicular lymphoma grade IIIb, lymph nodes of head, face, and neck
- C82.42 Follicular lymphoma grade IIIb, intrathoracic lymph nodes
- C82.43 Follicular lymphoma grade IIIb, intra-abdominal lymph nodes
- C82.44 Follicular lymphoma grade IIIb, lymph nodes of axilla and upper limb
- C82.45 Follicular lymphoma grade IIIb, lymph nodes of inguinal region and lower limb
- C82.46 Follicular lymphoma grade IIIb, intrapelvic lymph nodes
- C82.47 Follicular lymphoma grade IIIb, spleen
- C82.48 Follicular lymphoma grade IIIb, lymph nodes of multiple sites
- C82.49 Follicular lymphoma grade IIIb, extranodal and solid organ sites
- C82.4A Follicular lymphoma grade IIIb, in remission
- C82.5 Diffuse follicle center lymphomaNon-billable
- C82.50 Diffuse follicle center lymphoma, unspecified site
- C82.51 Diffuse follicle center lymphoma, lymph nodes of head, face, and neck
- C82.52 Diffuse follicle center lymphoma, intrathoracic lymph nodes
- C82.53 Diffuse follicle center lymphoma, intra-abdominal lymph nodes
- C82.54 Diffuse follicle center lymphoma, lymph nodes of axilla and upper limb
- C82.55 Diffuse follicle center lymphoma, lymph nodes of inguinal region and lower limb
- C82.56 Diffuse follicle center lymphoma, intrapelvic lymph nodes
- C82.57 Diffuse follicle center lymphoma, spleen
- C82.58 Diffuse follicle center lymphoma, lymph nodes of multiple sites
- C82.59 Diffuse follicle center lymphoma, extranodal and solid organ sites
- C82.5A Diffuse follicle center lymphoma, in remission
- C82.6 Cutaneous follicle center lymphomaNon-billable
- C82.60 Cutaneous follicle center lymphoma, unspecified site
- C82.61 Cutaneous follicle center lymphoma, lymph nodes of head, face, and neck
- C82.62 Cutaneous follicle center lymphoma, intrathoracic lymph nodes
- C82.63 Cutaneous follicle center lymphoma, intra-abdominal lymph nodes
- C82.64 Cutaneous follicle center lymphoma, lymph nodes of axilla and upper limb
- C82.65 Cutaneous follicle center lymphoma, lymph nodes of inguinal region and lower limb
- C82.66 Cutaneous follicle center lymphoma, intrapelvic lymph nodes
- C82.67 Cutaneous follicle center lymphoma, spleen
- C82.68 Cutaneous follicle center lymphoma, lymph nodes of multiple sites
- C82.69 Cutaneous follicle center lymphoma, extranodal and solid organ sites
- C82.6A Cutaneous follicle center lymphoma, in remission
- C82.8 Other types of follicular lymphomaNon-billable
- C82.80 Other types of follicular lymphoma, unspecified site
- C82.81 Other types of follicular lymphoma, lymph nodes of head, face, and neck
- C82.82 Other types of follicular lymphoma, intrathoracic lymph nodes
- C82.83 Other types of follicular lymphoma, intra-abdominal lymph nodes
- C82.84 Other types of follicular lymphoma, lymph nodes of axilla and upper limb
- C82.85 Other types of follicular lymphoma, lymph nodes of inguinal region and lower limb
- C82.86 Other types of follicular lymphoma, intrapelvic lymph nodes
- C82.87 Other types of follicular lymphoma, spleen
- C82.88 Other types of follicular lymphoma, lymph nodes of multiple sites
- C82.89 Other types of follicular lymphoma, extranodal and solid organ sites
- C82.8A Other types of follicular lymphoma, in remission
- C82.9 Follicular lymphoma, unspecifiedNon-billable
- C82.90 Follicular lymphoma, unspecified, unspecified site
- C82.91 Follicular lymphoma, unspecified, lymph nodes of head, face, and neck
- C82.92 Follicular lymphoma, unspecified, intrathoracic lymph nodes
- C82.93 Follicular lymphoma, unspecified, intra-abdominal lymph nodes
- C82.94 Follicular lymphoma, unspecified, lymph nodes of axilla and upper limb
- C82.95 Follicular lymphoma, unspecified, lymph nodes of inguinal region and lower limb
- C82.96 Follicular lymphoma, unspecified, intrapelvic lymph nodes
- C82.97 Follicular lymphoma, unspecified, spleen
- C82.98 Follicular lymphoma, unspecified, lymph nodes of multiple sites
- C82.99 Follicular lymphoma, unspecified, extranodal and solid organ sites
- C82.9A Follicular lymphoma, unspecified, in remission
About the C82 Code Range
ICD-10 code C82 represents follicular lymphoma, a type of non-Hodgkin lymphoma characterized by cancerous growth in lymphatic tissue. These codes are used to specify the grade and exact location of follicular lymphoma to ensure accurate diagnosis and treatment planning.
Follicular lymphoma codes cover various grades, from grade I to IIIb, reflecting the tumor's aggressiveness, including unspecified and remission statuses (e.g., C82.0 for grade I and C82.1A for grade II in remission). The subcodes detail lymphoma locations such as lymph nodes in the head, neck, axilla, intra-abdominal areas, or extranodal sites. Synonyms like "Follicular non-Hodgkin's lymphoma, small cleaved cell (clinical)" correspond to C82.00, aiding coders identifying the ICD-10 code for this condition. Other specialized types include diffuse follicle center lymphoma and cutaneous follicle center lymphoma, each with specific anatomical distinctions. Understanding these distinctions within the C82 series helps healthcare professionals capture the lymphoma's specific type and location for better clinical and administrative accuracy.
Questions About This Page
How many billable codes are in the C82 range?
Of the 109 codes in this range, 99 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the C82 range classify?
The range classifies follicular lymphoma. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
