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ICD-10-CM category

C84: Mature T/NK-cell lymphomas

194 subcodes · 178 billable · Look up any code with the ICD-10 search

Codes under C84 (Mature T/NK-cell lymphomas). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

CodeDescriptionBillable
C84.0 Mycosis fungoides —
C84.0 Mycosis fungoides —
C84.00 Mycosis fungoides, unspecified site ✓
C84.00 Mycosis fungoides, unspecified site ✓
C84.0A Mycosis fungoides, in remission ✓
C84.0A Mycosis fungoides, in remission ✓
C84.01 Mycosis fungoides, lymph nodes of head, face, and neck ✓
C84.01 Mycosis fungoides, lymph nodes of head, face, and neck ✓
C84.1 Sezary disease —
C84.1 Sezary disease —
C84.1A Sezary disease, in remission ✓
C84.1A Sezary disease, in remission ✓
C84.02 Mycosis fungoides, intrathoracic lymph nodes ✓
C84.02 Mycosis fungoides, intrathoracic lymph nodes ✓
C84.03 Mycosis fungoides, intra-abdominal lymph nodes ✓
C84.03 Mycosis fungoides, intra-abdominal lymph nodes ✓
C84.04 Mycosis fungoides, lymph nodes of axilla and upper limb ✓
C84.04 Mycosis fungoides, lymph nodes of axilla and upper limb ✓
C84.4 Peripheral T-cell lymphoma, not elsewhere classified —
C84.4 Peripheral T-cell lymphoma, not elsewhere classified —
C84.4A Peripheral T-cell lymphoma, not elsewhere classified, in remission ✓
C84.4A Peripheral T-cell lymphoma, not elsewhere classified, in remission ✓
C84.05 Mycosis fungoides, lymph nodes of inguinal region and lower limb ✓
C84.05 Mycosis fungoides, lymph nodes of inguinal region and lower limb ✓
C84.06 Mycosis fungoides, intrapelvic lymph nodes ✓
C84.06 Mycosis fungoides, intrapelvic lymph nodes ✓
C84.6 Anaplastic large cell lymphoma, ALK-positive —
C84.6 Anaplastic large cell lymphoma, ALK-positive —
C84.6A Anaplastic large cell lymphoma, ALK-positive, in remission ✓
C84.6A Anaplastic large cell lymphoma, ALK-positive, in remission ✓
C84.07 Mycosis fungoides, spleen ✓
C84.07 Mycosis fungoides, spleen ✓
C84.7 Anaplastic large cell lymphoma, ALK-negative —
C84.7 Anaplastic large cell lymphoma, ALK-negative —
C84.7A Anaplastic large cell lymphoma, ALK-negative, breast ✓
C84.7A Anaplastic large cell lymphoma, ALK-negative, breast ✓
C84.7B Anaplastic large cell lymphoma, ALK-negative, in remission ✓
C84.7B Anaplastic large cell lymphoma, ALK-negative, in remission ✓
C84.08 Mycosis fungoides, lymph nodes of multiple sites ✓
C84.08 Mycosis fungoides, lymph nodes of multiple sites ✓
C84.09 Mycosis fungoides, extranodal and solid organ sites ✓
C84.09 Mycosis fungoides, extranodal and solid organ sites ✓
C84.9 Mature T/NK-cell lymphomas, unspecified —
C84.9 Mature T/NK-cell lymphomas, unspecified —
C84.9A Mature T/NK-cell lymphomas, unspecified, in remission ✓
C84.9A Mature T/NK-cell lymphomas, unspecified, in remission ✓
C84.10 Sezary disease, unspecified site ✓
C84.10 Sezary disease, unspecified site ✓
C84.11 Sezary disease, lymph nodes of head, face, and neck ✓
C84.11 Sezary disease, lymph nodes of head, face, and neck ✓
C84.12 Sezary disease, intrathoracic lymph nodes ✓
C84.12 Sezary disease, intrathoracic lymph nodes ✓
C84.13 Sezary disease, intra-abdominal lymph nodes ✓
C84.13 Sezary disease, intra-abdominal lymph nodes ✓
C84.14 Sezary disease, lymph nodes of axilla and upper limb ✓
C84.14 Sezary disease, lymph nodes of axilla and upper limb ✓
C84.15 Sezary disease, lymph nodes of inguinal region and lower limb ✓
C84.15 Sezary disease, lymph nodes of inguinal region and lower limb ✓
C84.16 Sezary disease, intrapelvic lymph nodes ✓
C84.16 Sezary disease, intrapelvic lymph nodes ✓
C84.17 Sezary disease, spleen ✓
C84.17 Sezary disease, spleen ✓
C84.18 Sezary disease, lymph nodes of multiple sites ✓
C84.18 Sezary disease, lymph nodes of multiple sites ✓
C84.19 Sezary disease, extranodal and solid organ sites ✓
C84.19 Sezary disease, extranodal and solid organ sites ✓
C84.40 Peripheral T-cell lymphoma, not elsewhere classified, unspecified site ✓
C84.40 Peripheral T-cell lymphoma, not elsewhere classified, unspecified site ✓
C84.41 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of head, face, and neck ✓
C84.41 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of head, face, and neck ✓
C84.42 Peripheral T-cell lymphoma, not elsewhere classified, intrathoracic lymph nodes ✓
C84.42 Peripheral T-cell lymphoma, not elsewhere classified, intrathoracic lymph nodes ✓
C84.43 Peripheral T-cell lymphoma, not elsewhere classified, intra-abdominal lymph nodes ✓
C84.43 Peripheral T-cell lymphoma, not elsewhere classified, intra-abdominal lymph nodes ✓
C84.44 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of axilla and upper limb ✓
C84.44 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of axilla and upper limb ✓
C84.45 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of inguinal region and lower limb ✓
C84.45 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of inguinal region and lower limb ✓
C84.46 Peripheral T-cell lymphoma, not elsewhere classified, intrapelvic lymph nodes ✓
C84.46 Peripheral T-cell lymphoma, not elsewhere classified, intrapelvic lymph nodes ✓
C84.47 Peripheral T-cell lymphoma, not elsewhere classified, spleen ✓
C84.47 Peripheral T-cell lymphoma, not elsewhere classified, spleen ✓
C84.48 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of multiple sites ✓
C84.48 Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of multiple sites ✓
C84.49 Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites ✓
C84.49 Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites ✓
C84.60 Anaplastic large cell lymphoma, ALK-positive, unspecified site ✓
C84.60 Anaplastic large cell lymphoma, ALK-positive, unspecified site ✓
C84.61 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of head, face, and neck ✓
C84.61 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of head, face, and neck ✓
C84.62 Anaplastic large cell lymphoma, ALK-positive, intrathoracic lymph nodes ✓
C84.62 Anaplastic large cell lymphoma, ALK-positive, intrathoracic lymph nodes ✓
C84.63 Anaplastic large cell lymphoma, ALK-positive, intra-abdominal lymph nodes ✓
C84.63 Anaplastic large cell lymphoma, ALK-positive, intra-abdominal lymph nodes ✓
C84.64 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of axilla and upper limb ✓
C84.64 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of axilla and upper limb ✓
C84.65 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of inguinal region and lower limb ✓
C84.65 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of inguinal region and lower limb ✓
C84.66 Anaplastic large cell lymphoma, ALK-positive, intrapelvic lymph nodes ✓
C84.66 Anaplastic large cell lymphoma, ALK-positive, intrapelvic lymph nodes ✓
C84.67 Anaplastic large cell lymphoma, ALK-positive, spleen ✓
C84.67 Anaplastic large cell lymphoma, ALK-positive, spleen ✓
C84.68 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of multiple sites ✓
C84.68 Anaplastic large cell lymphoma, ALK-positive, lymph nodes of multiple sites ✓
C84.69 Anaplastic large cell lymphoma, ALK-positive, extranodal and solid organ sites ✓
C84.69 Anaplastic large cell lymphoma, ALK-positive, extranodal and solid organ sites ✓
C84.70 Anaplastic large cell lymphoma, ALK-negative, unspecified site ✓
C84.70 Anaplastic large cell lymphoma, ALK-negative, unspecified site ✓
C84.71 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of head, face, and neck ✓
C84.71 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of head, face, and neck ✓
C84.72 Anaplastic large cell lymphoma, ALK-negative, intrathoracic lymph nodes ✓
C84.72 Anaplastic large cell lymphoma, ALK-negative, intrathoracic lymph nodes ✓
C84.73 Anaplastic large cell lymphoma, ALK-negative, intra-abdominal lymph nodes ✓
C84.73 Anaplastic large cell lymphoma, ALK-negative, intra-abdominal lymph nodes ✓
C84.74 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of axilla and upper limb ✓
C84.74 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of axilla and upper limb ✓
C84.75 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of inguinal region and lower limb ✓
C84.75 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of inguinal region and lower limb ✓
C84.76 Anaplastic large cell lymphoma, ALK-negative, intrapelvic lymph nodes ✓
C84.76 Anaplastic large cell lymphoma, ALK-negative, intrapelvic lymph nodes ✓
C84.77 Anaplastic large cell lymphoma, ALK-negative, spleen ✓
C84.77 Anaplastic large cell lymphoma, ALK-negative, spleen ✓
C84.78 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of multiple sites ✓
C84.78 Anaplastic large cell lymphoma, ALK-negative, lymph nodes of multiple sites ✓
C84.79 Anaplastic large cell lymphoma, ALK-negative, extranodal and solid organ sites ✓
C84.79 Anaplastic large cell lymphoma, ALK-negative, extranodal and solid organ sites ✓
C84.90 Mature T/NK-cell lymphomas, unspecified, unspecified site ✓
C84.90 Mature T/NK-cell lymphomas, unspecified, unspecified site ✓
C84.91 Mature T/NK-cell lymphomas, unspecified, lymph nodes of head, face, and neck ✓
C84.91 Mature T/NK-cell lymphomas, unspecified, lymph nodes of head, face, and neck ✓
C84.92 Mature T/NK-cell lymphomas, unspecified, intrathoracic lymph nodes ✓
C84.92 Mature T/NK-cell lymphomas, unspecified, intrathoracic lymph nodes ✓
C84.93 Mature T/NK-cell lymphomas, unspecified, intra-abdominal lymph nodes ✓
C84.93 Mature T/NK-cell lymphomas, unspecified, intra-abdominal lymph nodes ✓
C84.94 Mature T/NK-cell lymphomas, unspecified, lymph nodes of axilla and upper limb ✓
C84.94 Mature T/NK-cell lymphomas, unspecified, lymph nodes of axilla and upper limb ✓
C84.95 Mature T/NK-cell lymphomas, unspecified, lymph nodes of inguinal region and lower limb ✓
C84.95 Mature T/NK-cell lymphomas, unspecified, lymph nodes of inguinal region and lower limb ✓
C84.96 Mature T/NK-cell lymphomas, unspecified, intrapelvic lymph nodes ✓
C84.96 Mature T/NK-cell lymphomas, unspecified, intrapelvic lymph nodes ✓
C84.97 Mature T/NK-cell lymphomas, unspecified, spleen ✓
C84.97 Mature T/NK-cell lymphomas, unspecified, spleen ✓
C84.98 Mature T/NK-cell lymphomas, unspecified, lymph nodes of multiple sites ✓
C84.98 Mature T/NK-cell lymphomas, unspecified, lymph nodes of multiple sites ✓
C84.99 Mature T/NK-cell lymphomas, unspecified, extranodal and solid organ sites ✓
C84.99 Mature T/NK-cell lymphomas, unspecified, extranodal and solid organ sites ✓
C84.A Cutaneous T-cell lymphoma, unspecified —
C84.A Cutaneous T-cell lymphoma, unspecified —
C84.A0 Cutaneous T-cell lymphoma, unspecified, unspecified site ✓
C84.A0 Cutaneous T-cell lymphoma, unspecified, unspecified site ✓
C84.A1 Cutaneous T-cell lymphoma, unspecified lymph nodes of head, face, and neck ✓
C84.A1 Cutaneous T-cell lymphoma, unspecified lymph nodes of head, face, and neck ✓
C84.A2 Cutaneous T-cell lymphoma, unspecified, intrathoracic lymph nodes ✓
C84.A2 Cutaneous T-cell lymphoma, unspecified, intrathoracic lymph nodes ✓
C84.A3 Cutaneous T-cell lymphoma, unspecified, intra-abdominal lymph nodes ✓
C84.A3 Cutaneous T-cell lymphoma, unspecified, intra-abdominal lymph nodes ✓
C84.A4 Cutaneous T-cell lymphoma, unspecified, lymph nodes of axilla and upper limb ✓
C84.A4 Cutaneous T-cell lymphoma, unspecified, lymph nodes of axilla and upper limb ✓
C84.A5 Cutaneous T-cell lymphoma, unspecified, lymph nodes of inguinal region and lower limb ✓
C84.A5 Cutaneous T-cell lymphoma, unspecified, lymph nodes of inguinal region and lower limb ✓
C84.A6 Cutaneous T-cell lymphoma, unspecified, intrapelvic lymph nodes ✓
C84.A6 Cutaneous T-cell lymphoma, unspecified, intrapelvic lymph nodes ✓
C84.A7 Cutaneous T-cell lymphoma, unspecified, spleen ✓
C84.A7 Cutaneous T-cell lymphoma, unspecified, spleen ✓
C84.A8 Cutaneous T-cell lymphoma, unspecified, lymph nodes of multiple sites ✓
C84.A8 Cutaneous T-cell lymphoma, unspecified, lymph nodes of multiple sites ✓
C84.A9 Cutaneous T-cell lymphoma, unspecified, extranodal and solid organ sites ✓
C84.A9 Cutaneous T-cell lymphoma, unspecified, extranodal and solid organ sites ✓
C84.AA Cutaneous T-cell lymphoma, unspecified, in remission ✓
C84.AA Cutaneous T-cell lymphoma, unspecified, in remission ✓
C84.Z Other mature T/NK-cell lymphomas —
C84.Z Other mature T/NK-cell lymphomas —
C84.Z0 Other mature T/NK-cell lymphomas, unspecified site ✓
C84.Z0 Other mature T/NK-cell lymphomas, unspecified site ✓
C84.Z1 Other mature T/NK-cell lymphomas, lymph nodes of head, face, and neck ✓
C84.Z1 Other mature T/NK-cell lymphomas, lymph nodes of head, face, and neck ✓
C84.Z2 Other mature T/NK-cell lymphomas, intrathoracic lymph nodes ✓
C84.Z2 Other mature T/NK-cell lymphomas, intrathoracic lymph nodes ✓
C84.Z3 Other mature T/NK-cell lymphomas, intra-abdominal lymph nodes ✓
C84.Z3 Other mature T/NK-cell lymphomas, intra-abdominal lymph nodes ✓
C84.Z4 Other mature T/NK-cell lymphomas, lymph nodes of axilla and upper limb ✓
C84.Z4 Other mature T/NK-cell lymphomas, lymph nodes of axilla and upper limb ✓
C84.Z5 Other mature T/NK-cell lymphomas, lymph nodes of inguinal region and lower limb ✓
C84.Z5 Other mature T/NK-cell lymphomas, lymph nodes of inguinal region and lower limb ✓
C84.Z6 Other mature T/NK-cell lymphomas, intrapelvic lymph nodes ✓
C84.Z6 Other mature T/NK-cell lymphomas, intrapelvic lymph nodes ✓
C84.Z7 Other mature T/NK-cell lymphomas, spleen ✓
C84.Z7 Other mature T/NK-cell lymphomas, spleen ✓
C84.Z8 Other mature T/NK-cell lymphomas, lymph nodes of multiple sites ✓
C84.Z8 Other mature T/NK-cell lymphomas, lymph nodes of multiple sites ✓
C84.Z9 Other mature T/NK-cell lymphomas, extranodal and solid organ sites ✓
C84.Z9 Other mature T/NK-cell lymphomas, extranodal and solid organ sites ✓
C84.ZA Other mature T/NK-cell lymphomas, in remission ✓
C84.ZA Other mature T/NK-cell lymphomas, in remission ✓

Frequently asked questions

What is ICD-10-CM code C84?

C84 is an ICD-10-CM category covering Mature T/NK-cell lymphomas. It contains 194 more specific diagnosis codes, 178 of which are billable.

Is C84 a billable code?

No — C84 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example C84.0 — Mycosis fungoides). 178 of the 194 codes under C84 are billable.

What codes fall under C84?

C84 includes C84.0, C84.0, C84.00, C84.00, C84.0A, plus 189 more. See the full list with descriptions and billable status above.

More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees

Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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