ICD-10 · PDGM grouping
C84 Mature T/NK-cell lymphomas
All 89 codes in the C84 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
89
Can lead a claim
89
Cannot lead a claim
0
What CMS assigns to C84
All 89 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases. Comorbidity subgroups: 66 toward Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia; 23 toward Non-Hodgkin’s Lymphoma. Every code can lead a claim.
- Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia
- Non-Hodgkin’s Lymphoma
Every code in C84
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| C84.0 Mycosis fungoides | ||||
| C84.00 | Mycosis fungoides, unspecified site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.01 | Mycosis fungoides, lymph nodes of head, face, and neck | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.02 | Mycosis fungoides, intrathoracic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.03 | Mycosis fungoides, intra-abdominal lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.04 | Mycosis fungoides, lymph nodes of axilla and upper limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.05 | Mycosis fungoides, lymph nodes of inguinal region and lower limbCMS: Mycosis fungoides, nodes of inguinal region and lower limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.06 | Mycosis fungoides, intrapelvic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.07 | Mycosis fungoides, spleen | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.08 | Mycosis fungoides, lymph nodes of multiple sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.09 | Mycosis fungoides, extranodal and solid organ sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.0A | Mycosis fungoides, in remission | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.1 Sezary disease | ||||
| C84.10 | Sezary disease, unspecified site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.11 | Sezary disease, lymph nodes of head, face, and neck | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.12 | Sezary disease, intrathoracic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.13 | Sezary disease, intra-abdominal lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.14 | Sezary disease, lymph nodes of axilla and upper limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.15 | Sezary disease, lymph nodes of inguinal region and lower limbCMS: Sezary disease, nodes of inguinal region and lower limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.16 | Sezary disease, intrapelvic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.17 | Sezary disease, spleen | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.18 | Sezary disease, lymph nodes of multiple sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.19 | Sezary disease, extranodal and solid organ sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.1A | Sezary disease, in remission | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.4 Peripheral T-cell lymphoma, not elsewhere classified | ||||
| C84.40 | Peripheral T-cell lymphoma, not elsewhere classified, unspecified siteCMS: Peripheral T-cell lymphoma, NEC, unspecified site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.41 | Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of head, face, and neckCMS: Prph T-cell lymphoma, NEC, nodes of head, face, and neck | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.42 | Peripheral T-cell lymphoma, not elsewhere classified, intrathoracic lymph nodesCMS: Peripheral T-cell lymphoma, NEC, intrathoracic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.43 | Peripheral T-cell lymphoma, not elsewhere classified, intra-abdominal lymph nodesCMS: Peripheral T-cell lymphoma, NEC, intra-abdominal lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.44 | Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of axilla and upper limbCMS: Prph T-cell lymphoma, NEC, nodes of axilla and upper limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.45 | Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of inguinal region and lower limbCMS: Prph T-cell lymph, NEC, nodes of ing region and lower limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.46 | Peripheral T-cell lymphoma, not elsewhere classified, intrapelvic lymph nodesCMS: Peripheral T-cell lymphoma, NEC, intrapelvic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.47 | Peripheral T-cell lymphoma, not elsewhere classified, spleen | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.48 | Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of multiple sitesCMS: Peripheral T-cell lymphoma, NEC, lymph nodes mult site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.49 | Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sitesCMS: Prph T-cell lymphoma, NEC, extrnod and solid organ sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.4A | Peripheral T-cell lymphoma, not elsewhere classified, in remissionCMS: Peripheral T-cell lymphoma, NEC, in remission | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.6 Anaplastic large cell lymphoma, ALK-positive | ||||
| C84.60 | Anaplastic large cell lymphoma, ALK-positive, unspecified siteCMS: Anaplastic large cell lymphoma, ALK-positive, unsp site | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.61 | Anaplastic large cell lymphoma, ALK-positive, lymph nodes of head, face, and neckCMS: Anaplstc lg cell lymph, ALK-pos, nodes of head, face, and nk | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.62 | Anaplastic large cell lymphoma, ALK-positive, intrathoracic lymph nodesCMS: Anaplastic large cell lymphoma, ALK-pos, intrathorac nodes | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.63 | Anaplastic large cell lymphoma, ALK-positive, intra-abdominal lymph nodesCMS: Anaplastic large cell lymphoma, ALK-pos, intra-abd nodes | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.64 | Anaplastic large cell lymphoma, ALK-positive, lymph nodes of axilla and upper limbCMS: Anaplstc lg cell lymph, ALK-pos, nodes of axla and upr limb | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.65 | Anaplastic large cell lymphoma, ALK-positive, lymph nodes of inguinal region and lower limbCMS: Anaplstc lg cell lymph, ALK-pos, nodes of ing rgn & low lmb | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.66 | Anaplastic large cell lymphoma, ALK-positive, intrapelvic lymph nodesCMS: Anaplastic large cell lymphoma, ALK-pos, intrapelv nodes | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.67 | Anaplastic large cell lymphoma, ALK-positive, spleen | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.68 | Anaplastic large cell lymphoma, ALK-positive, lymph nodes of multiple sitesCMS: Anaplastic large cell lymphoma, ALK-pos, nodes mult site | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.69 | Anaplastic large cell lymphoma, ALK-positive, extranodal and solid organ sitesCMS: Anaplstc lg cell lymph, ALK-pos, extrnod and solid org sites | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.6A | Anaplastic large cell lymphoma, ALK-positive, in remission | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.7 Anaplastic large cell lymphoma, ALK-negative | ||||
| C84.70 | Anaplastic large cell lymphoma, ALK-negative, unspecified siteCMS: Anaplastic large cell lymphoma, ALK-negative, unsp site | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.71 | Anaplastic large cell lymphoma, ALK-negative, lymph nodes of head, face, and neckCMS: Anaplstc lg cell lymph, ALK-neg, nodes of head, face, and nk | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.72 | Anaplastic large cell lymphoma, ALK-negative, intrathoracic lymph nodesCMS: Anaplastic large cell lymphoma, ALK-neg, intrathorac nodes | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.73 | Anaplastic large cell lymphoma, ALK-negative, intra-abdominal lymph nodesCMS: Anaplastic large cell lymphoma, ALK-neg, intra-abd nodes | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.74 | Anaplastic large cell lymphoma, ALK-negative, lymph nodes of axilla and upper limbCMS: Anaplstc lg cell lymph, ALK-neg, nodes of axla and upr limb | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.75 | Anaplastic large cell lymphoma, ALK-negative, lymph nodes of inguinal region and lower limbCMS: Anaplstc lg cell lymph, ALK-neg, nodes of ing rgn & low lmb | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.76 | Anaplastic large cell lymphoma, ALK-negative, intrapelvic lymph nodesCMS: Anaplastic large cell lymphoma, ALK-neg, intrapelv nodes | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.77 | Anaplastic large cell lymphoma, ALK-negative, spleen | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.78 | Anaplastic large cell lymphoma, ALK-negative, lymph nodes of multiple sitesCMS: Anaplastic large cell lymphoma, ALK-neg, nodes mult site | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.79 | Anaplastic large cell lymphoma, ALK-negative, extranodal and solid organ sitesCMS: Anaplstc lg cell lymph, ALK-neg, extrnod and solid org sites | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.7A | Anaplastic large cell lymphoma, ALK-negative, breast | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.7B | Anaplastic large cell lymphoma, ALK-negative, in remission | Can lead a claim | K | Non-Hodgkin’s Lymphoma |
| C84.A Cutaneous T-cell lymphoma, unspecified | ||||
| C84.A0 | Cutaneous T-cell lymphoma, unspecified, unspecified site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A1 | Cutaneous T-cell lymphoma, unspecified lymph nodes of head, face, and neckCMS: Cutan T-cell lymphoma, unsp nodes of head, face, and neck | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A2 | Cutaneous T-cell lymphoma, unspecified, intrathoracic lymph nodesCMS: Cutaneous T-cell lymphoma, unsp, intrathoracic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A3 | Cutaneous T-cell lymphoma, unspecified, intra-abdominal lymph nodesCMS: Cutaneous T-cell lymphoma, unsp, intra-abdominal lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A4 | Cutaneous T-cell lymphoma, unspecified, lymph nodes of axilla and upper limbCMS: Cutan T-cell lymphoma, unsp, nodes of axilla and upper limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A5 | Cutaneous T-cell lymphoma, unspecified, lymph nodes of inguinal region and lower limbCMS: Cutan T-cell lymph, unsp, nodes of ing region and lower limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A6 | Cutaneous T-cell lymphoma, unspecified, intrapelvic lymph nodesCMS: Cutaneous T-cell lymphoma, unsp, intrapelvic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A7 | Cutaneous T-cell lymphoma, unspecified, spleen | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A8 | Cutaneous T-cell lymphoma, unspecified, lymph nodes of multiple sitesCMS: Cutaneous T-cell lymphoma, unsp, lymph nodes mult site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.A9 | Cutaneous T-cell lymphoma, unspecified, extranodal and solid organ sitesCMS: Cutan T-cell lymphoma, unsp, extrnod and solid organ sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.AA | Cutaneous T-cell lymphoma, unspecified, in remission | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z Other mature T/NK-cell lymphomas | ||||
| C84.Z0 | Other mature T/NK-cell lymphomas, unspecified site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z1 | Other mature T/NK-cell lymphomas, lymph nodes of head, face, and neckCMS: Oth mature T/NK-cell lymph, nodes of head, face, and neck | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z2 | Other mature T/NK-cell lymphomas, intrathoracic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z3 | Other mature T/NK-cell lymphomas, intra-abdominal lymph nodesCMS: Oth mature T/NK-cell lymphomas, intra-abdominal lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z4 | Other mature T/NK-cell lymphomas, lymph nodes of axilla and upper limbCMS: Oth mature T/NK-cell lymph, nodes of axilla and upper limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z5 | Other mature T/NK-cell lymphomas, lymph nodes of inguinal region and lower limbCMS: Oth mature T/NK-cell lymph, nodes of ing rgn and lower limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z6 | Other mature T/NK-cell lymphomas, intrapelvic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z7 | Other mature T/NK-cell lymphomas, spleen | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z8 | Other mature T/NK-cell lymphomas, lymph nodes of multiple sitesCMS: Oth mature T/NK-cell lymphomas, lymph nodes mult site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.Z9 | Other mature T/NK-cell lymphomas, extranodal and solid organ sitesCMS: Oth mature T/NK-cell lymph, extrnod and solid organ sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.ZA | Other mature T/NK-cell lymphomas, in remission | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.9 Mature T/NK-cell lymphomas, unspecified | ||||
| C84.90 | Mature T/NK-cell lymphomas, unspecified, unspecified site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.91 | Mature T/NK-cell lymphomas, unspecified, lymph nodes of head, face, and neckCMS: Mature T/NK-cell lymph, unsp, nodes of head, face, and neck | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.92 | Mature T/NK-cell lymphomas, unspecified, intrathoracic lymph nodesCMS: Mature T/NK-cell lymphomas, unsp, intrathoracic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.93 | Mature T/NK-cell lymphomas, unspecified, intra-abdominal lymph nodesCMS: Mature T/NK-cell lymphomas, unsp, intra-abd lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.94 | Mature T/NK-cell lymphomas, unspecified, lymph nodes of axilla and upper limbCMS: Mature T/NK-cell lymph, unsp, nodes of axilla and upper limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.95 | Mature T/NK-cell lymphomas, unspecified, lymph nodes of inguinal region and lower limbCMS: Mature T/NK-cell lymph, unsp, nodes of ing rgn and low limb | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.96 | Mature T/NK-cell lymphomas, unspecified, intrapelvic lymph nodesCMS: Mature T/NK-cell lymphomas, unsp, intrapelvic lymph nodes | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.97 | Mature T/NK-cell lymphomas, unspecified, spleen | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.98 | Mature T/NK-cell lymphomas, unspecified, lymph nodes of multiple sitesCMS: Mature T/NK-cell lymphomas, unsp, lymph nodes mult site | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.99 | Mature T/NK-cell lymphomas, unspecified, extranodal and solid organ sitesCMS: Mature T/NK-cell lymph, unsp, extrnod and solid organ sites | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
| C84.9A | Mature T/NK-cell lymphomas, unspecified, in remission | Can lead a claim | K | Follicular and Other Non-Hodgkin’s Lymphoma, and Leukemia |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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