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 2027, 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.
Angioimmunoblastic T-Cell Lymphoma
An aggressive follicular helper T-cell lymphoma affecting lymph nodes and other sites. It is characterized by a polymorphous infiltrate and prominent proliferation of high endothelial venules and follicular dendritic cells. It is associated with EBV infection and affects mainly older adults.
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.
Enteropathy-Associated T-Cell Lymphoma
A mature T-cell and NK-cell non-Hodgkin lymphoma of intraepithelial T-lymphocytes characterized by the presence of pleomorphic medium-sized to large T-lymphocytes with vesicular nuclei, prominent nucleoli, and moderate to abundant pale cytoplasm. It usually arises from the small intestine, most commonly the jejunum or ileum. Other less frequent primary anatomic sites include the duodenum, stomach, colon, or outside the gastrointestinal tract. It is associated with celiac disease.
Hepatosplenic T-Cell Lymphoma
An extranodal mature T-cell non-Hodgkin lymphoma that originates from cytotoxic T-cells, usually of gamma/delta T-cell type and is characterized by the presence of medium-size neoplastic lymphocytes infiltrating the hepatic sinusoids. A similar infiltrating pattern is also present in the spleen and bone marrow which are usually involved at the time of the diagnosis.
Lymphoma, Extranodal NK-T-Cell
An extranodal neoplasm, usually possessing an NK-cell phenotype and associated with EPSTEIN-BARR VIRUS. These lymphomas exhibit a broad morphologic spectrum, frequent necrosis, angioinvasion, and most commonly present in the midfacial region, but also in other extranodal sites.
Primary Cutaneous CD30-Positive T-Cell Lymphoproliferative Disorder
A spectrum of lymphoproliferative disorders characterized by CD30 (Ki-1)-positive cutaneous T-cell infiltrates. The two ends of the spectrum include lymphomatoid papulosis and primary cutaneous anaplastic large cell lymphoma.
Subcutaneous Panniculitis-Like T-Cell Lymphoma
A cytotoxic primary cutaneous T-cell lymphoma. Recent studies suggest there are at least two groups of subcutaneous panniculitis-like T-cell lymphomas, each with distinct histologic features, immunophenotypic profile, and prognosis. One group has an alpha/beta, CD8 positive phenotype, involves only subcutaneous tissues, and usually has an indolent clinical course. The second group has a gamma/delta phenotype, is CD8 negative, often co-expresses CD56, is not confined to the subcutaneous tissues, and usually has a poor prognosis. In the recent WHO-EORTC classification, the term subcutaneous panniculitis-like T-cell lymphoma is reserved for cases with an alpha/beta, CD8 positive phenotype. Cases with a gamma/delta phenotype are included in the group of cutaneous gamma/delta T-cell lymphomas.
About the C86 Code Range
These are specified T-cell and NK-cell lymphomas within cancers of lymphoid, blood-forming, and related tissue.
The subdivisions separate a nasal type outside lymph nodes (C86.0), a liver-and-spleen type (C86.1), an intestinal type (C86.2), and an under-the-skin type (C86.3). Other groups identify blastic NK-cell lymphoma (C86.4), angioimmunoblastic T-cell lymphoma (C86.5), and CD30-positive T-cell growths of the skin (C86.6). Each group then distinguishes disease that has not achieved remission from disease in remission.
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, 2026 through September 30, 2027. 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 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
