Other specified types of T/NK-cell lymphoma (C86) ICD-10-CM
The C86 code range covers other specified types of t/nk-cell lymphoma with 22 ICD-10-CM diagnosis codes. 14 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
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 C86 Range 22 codes · 14 billable
- C86 Other specified types of T/NK-cell lymphomaNon-billable
- C86.0 Extranodal NK/T-cell lymphoma, nasal typeNon-billable
- C86.00 Extranodal NK/T-cell lymphoma, nasal type not having achieved remission
- C86.01 Extranodal NK/T-cell lymphoma, nasal type, in remission
- C86.1 Hepatosplenic T-cell lymphomaNon-billable
- C86.10 Hepatosplenic T-cell lymphoma not having achieved remission
- C86.11 Hepatosplenic T-cell lymphoma, in remission
- C86.2 Enteropathy-type (intestinal) T-cell lymphomaNon-billable
- C86.20 Enteropathy-type (intestinal) T-cell lymphoma not having achieved remission
- C86.21 Enteropathy-type (intestinal) T-cell lymphoma, in remission
- C86.3 Subcutaneous panniculitis-like T-cell lymphomaNon-billable
- C86.30 Subcutaneous panniculitis-like T-cell lymphoma not having achieved remission
- C86.31 Subcutaneous panniculitis-like T-cell lymphoma, in remission
- C86.4 Blastic NK-cell lymphomaNon-billable
- C86.40 Blastic NK-cell lymphoma not having achieved remission
- C86.41 Blastic NK-cell lymphoma, in remission
- C86.5 Angioimmunoblastic T-cell lymphomaNon-billable
- C86.50 Angioimmunoblastic T-cell lymphoma not having achieved remission
- C86.51 Angioimmunoblastic T-cell lymphoma, in remission
- C86.6 Primary cutaneous CD30-positive T-cell proliferationsNon-billable
- C86.60 Primary cutaneous CD30-positive T-cell proliferations not having achieved remission
- C86.61 Primary cutaneous CD30-positive T-cell proliferations, in remission
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C86 range.
Blastic Plasmacytoid Dendritic Cell Neoplasm
A rare and aggressive hematologic malignancy derived from the precursors of PLASMACYTOID DENDRITIC CELLS. Blastic plasmacytoid dendritic cell neoplasms affect bone marrow and blood in addition to the lymph nodes, spleen, central nervous system, and skin.
Lymphomatoid Papulosis
Clinically benign, histologically malignant, recurrent cutaneous T-cell lymphoproliferative disorder characterized by an infiltration of large atypical cells surrounded by inflammatory cells. The atypical cells resemble REED-STERNBERG CELLS of HODGKIN DISEASE or the malignant cells of CUTANEOUS T-CELL LYMPHOMA. In some cases, lymphomatoid papulosis progresses to lymphomatous conditions including MYCOSIS FUNGOIDES; HODGKIN DISEASE; CUTANEOUS T-CELL LYMPHOMA; or ANAPLASTIC LARGE-CELL LYMPHOMA.
About the C86 Code Range
The ICD-10 code C86 covers various specified types of T-cell and natural killer (NK)-cell lymphomas, including conditions like extranodal NK/T-cell lymphoma, hepatosplenic T-cell lymphoma, and others. These codes help classify specific lymphomas that affect the immune system’s T and NK cells, providing distinctions based on location and remission status.
This section is used for coding less common T/NK-cell lymphomas such as extranodal NK/T-cell lymphoma, nasal type (C86.0), sometimes called angiocentric NK/T-cell malignant lymphoma involving skin. It also includes hepatosplenic T-cell lymphoma (C86.1), known as hepatosplenic gamma-delta cell lymphoma, and enteropathy-type (intestinal) T-cell lymphoma (C86.2), known as enteropathy-associated T-cell lymphoma or gastrointestinal lymphoma. Other entries include subcutaneous panniculitis-like T-cell lymphoma (C86.3), blastic NK-cell lymphoma (C86.4) which may be called NK-lymphoblastic leukemia/lymphoma, and angioimmunoblastic T-cell lymphoma (C86.5). Primary cutaneous CD30-positive T-cell proliferations (C86.6) embrace conditions like lymphomatoid papulosis and primary cutaneous anaplastic large cell lymphoma. Each subtype has codes to specify whether the disease is in remission or not, which is useful for treatment tracking and documentation. Use the ICD-10 code for [specific condition] to accurately capture precise diagnoses in clinical records.
Questions About This Page
How many billable codes are in the C86 range?
Of the 22 codes in this range, 14 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 C86 range classify?
The range classifies other specified types of t/nk-cell 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.
