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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ICD-10-CM Code For Other Specified Types Of T NK Cell Lymphoma: Group Overview

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

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

DRG Codes

15 rows

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

ICD-10-CM Codes

14 rows

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

DRG Codes

15 rows

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

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Other Specified Types Of T NK Cell Lymphoma: Group Overview

Sign up for ICD-10-CM Code For Other Specified Types Of T NK Cell Lymphoma: Group Overview policy alerts

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

ICD-10-CM Code For Other Specified Types Of T NK Cell Lymphoma: Group Overview

Sign up for ICD-10-CM Code For Other Specified Types Of T NK Cell Lymphoma: Group Overview policy alerts

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

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are used for extranodal NK/T-cell lymphoma, nasal type and its remission status?

What codes cover hepatosplenic T-cell lymphoma and how do they reflect disease status?

How are enteropathy-type and subcutaneous panniculitis-like T-cell lymphomas coded in ICD-10-CM C86?

Which C86 codes apply to blastic NK-cell and angioimmunoblastic T-cell lymphomas?

What codes represent primary cutaneous CD30-positive T-cell proliferations and how does this group relate to DRGs?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are used for extranodal NK/T-cell lymphoma, nasal type and its remission status?

What codes cover hepatosplenic T-cell lymphoma and how do they reflect disease status?

How are enteropathy-type and subcutaneous panniculitis-like T-cell lymphomas coded in ICD-10-CM C86?

Which C86 codes apply to blastic NK-cell and angioimmunoblastic T-cell lymphomas?

What codes represent primary cutaneous CD30-positive T-cell proliferations and how does this group relate to DRGs?

References