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    v1.0.28
    OpenPayerBilling CodesMalignant neoplasms of lymphoid, hematopoietic and related tissueICD-10-CM c86-other-specified-t-nk-cell-lymphoma
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    ICD-10-CM Code For Other Specified Types Of T NK Cell Lymphoma: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group C86 includes specified types of T-cell and natural killer-cell lymphoma, such as peripheral T-cell lymphoma subtypes and other less common T/NK-cell neoplasms, covering nodal and extranodal presentations. These ICD-10-CM diagnosis codes are used to document cases involving distinct histologic subtypes, patterns of organ involvement, and varying clinical aggressiveness. Accurate coding within the ICD-10-CM C86 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM C86: Other Specified Types Of T/NK-Cell Lymphoma Overview

    This group represents rare, aggressive lymphomas originating from T-lymphocytes and natural killer lymphocytes that affect lymphoid and related hematopoietic tissues. These malignancies target the lymphatic and immune systems and may present with nodal, extranodal, or systemic involvement. Accurate coding is important for complete clinical documentation and to support appropriate reimbursement for oncology services.

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    When to Use

    Use a code from this group when pathology and clinical findings identify a specified T-cell or natural killer-cell lymphoma subtype that does not fit into other primary lymphoma categories. Codes in this group are applied when documentation specifies the exact subtype, anatomic site, or behavior consistent with T/NK-cell lymphoid malignancy.

    ICD-10-CM Codes

    14 rows

    ICD-10-CM CodeDescription
    C86.00Extranodal NK/T-cell lymphoma, nasal type not having achieved remission
    C86.01Extranodal NK/T-cell lymphoma, nasal type, in remission
    C86.10Hepatosplenic T-cell lymphoma not having achieved remission
    C86.11Hepatosplenic T-cell lymphoma, in remission
    C86.20Enteropathy-type (intestinal) T-cell lymphoma not having achieved remission
    C86.21Enteropathy-type (intestinal) T-cell lymphoma, in remission
    C86.30Subcutaneous panniculitis-like T-cell lymphoma not having achieved remission
    C86.31Subcutaneous panniculitis-like T-cell lymphoma, in remission
    C86.40Blastic NK-cell lymphoma not having achieved remission
    C86.41Blastic NK-cell lymphoma, in remission
    C86.50Angioimmunoblastic T-cell lymphoma not having achieved remission
    C86.51Angioimmunoblastic T-cell lymphoma, in remission
    C86.60Primary cutaneous CD30-positive T-cell proliferations not having achieved remission
    C86.61Primary cutaneous CD30-positive T-cell proliferations, in remission

    DRG Codes

    15 rows

    DRG CodeDescription
    011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
    012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
    013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
    820Lymphoma and Leukemia with Major O.R. Procedures with MCC
    821Lymphoma and Leukemia with Major O.R. Procedures with CC
    822Lymphoma and Leukemia with Major O.R. Procedures without CC/MCC
    823Lymphoma and Non-Acute Leukemia with Other Procedures with MCC
    824Lymphoma and Non-Acute Leukemia with Other Procedures with CC
    825Lymphoma and Non-Acute Leukemia with Other Procedures without CC/MCC
    840Lymphoma and Non-Acute Leukemia with MCC
    841Lymphoma and Non-Acute Leukemia with CC
    842Lymphoma and Non-Acute Leukemia without CC/MCC
    974HIV with Major Related Condition with MCC
    975HIV with Major Related Condition with CC
    976HIV with Major Related Condition without CC/MCC

    Typical Clinical Scenarios

    • An elderly patient presents to oncology clinic with progressive, painless cervical and axillary lymphadenopathy, night sweats, weight loss, and pruritus over several months. Excisional lymph node biopsy shows peripheral T-cell lymphoma with angioimmunoblastic features and systemic B symptoms; staging workup reveals involvement of lymph nodes without extranodal skin lesions. A diagnosis from this group is assigned for a systemic nodal T/NK-cell lymphoma subtype to guide staging and specialty care. Typical codes: C86.10, C86.11
    • A middle-aged patient with a history of chronic cutaneous lesions arrives to dermatology with rapidly enlarging ulcerated plaques and nodules on the trunk and extremities associated with fever and new tumor-stage skin lesions. Skin biopsy demonstrates a primary cutaneous T-cell lymphoma with tumor formation (non-mycosis fungoides type), and the presentation requires systemic therapy evaluation. A code from this group is used to capture primary cutaneous T/NK-cell lymphoma involvement. Typical codes: C86.40, C86.41
    • A patient undergoing chemotherapy for known peripheral T-cell lymphoma is admitted with acute neutropenic fever and sepsis; imaging also shows new hepatic and bone marrow involvement indicating disease progression with extranodal organ infiltration. The hospitalization documents aggressive systemic T/NK-cell lymphoma with secondary extranodal spread complicating treatment, so a code from this group reflecting advanced or disseminated disease is assigned for inpatient care and complication tracking. Typical codes: C86.20, C86.21

    Related Codes

    C81-HODGKIN-LYMPHOMA

    ICD-10-CM Code For Hodgkin Lymphoma: Group Overview

    C82-FOLLICULAR-LYMPHOMA

    ICD-10-CM Code For Follicular Lymphoma: Group Overview

    C83-NON-FOLLICULAR-LYMPHOMA

    ICD-10-CM Code For Non-Follicular Lymphoma: Group Overview

    C84-MATURE-T-NK-CELL-LYMPHOMAS

    ICD-10-CM Code For Mature T/NK-Cell Lymphomas: Group Overview

    C85-OTHER-SPECIFIED-AND-UNSPECIFIED-NON-HODGKIN-LYMPHOMA

    ICD-10-CM Code For Other Specified And Unspecified Types Of Non Hodgkin Lymphoma: Group Overview

    C88-MALIGNANT-IMMUNOPROLIFERATIVE-DISEASES

    ICD-10-CM Code For Malignant Immunoproliferative Diseases And Certain Other B-Cell Lymphomas: Group Overview

    C90-MULTIPLE-MYELOMA-AND-PLASMA-CELL-NEOPLASMS

    ICD-10-CM Code For Multiple Myeloma And Malignant Plasma Cell Neoplasms: Group Overview

    C91-LYMPHOID-LEUKEMIA

    ICD-10-CM Code For Lymphoid Leukemia: Group Overview

    C92-MYELOID-LEUKEMIA

    ICD-10-CM Code For Myeloid Leukemia: Group Overview

    C93-MONOCYTIC-LEUKEMIA

    ICD-10-CM Code For Monocytic Leukemia: Group Overview

    Showing 1–10 of 13

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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