2026 ICD-10-CM Diagnosis Code C86Other specified types of T/NK-cell lymphoma

ICD-10-CM Codes›C00–D49›C81-C96›C86

ICD-10-CM C86
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C86 is a non-billable ICD-10-CM category code for other specified types of T/NK-cell lymphoma, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C86.00, C86.01, C86.10, and C86.11.

Code Identity

ICD-10-CM Code
C86
Billable Status
No — Non-Billable Category
Code Describes
Other specified types of T/NK-cell lymphoma
Short Description
Other specified types of T/NK-cell lymphoma
Same as the full description in the CMS dataset.
Chapter
C81-C96
Malignant neoplasms of lymphoid, hematopoietic and related tissue

Code Classification

ChapterC00–D49Neoplasms
SectionC81-C96Malignant neoplasms of lymphoid, hematopoietic and related tissue
CategoryC86Other specified types of T/NK-cell lymphoma
This CodeC86Other specified types of T/NK-cell lymphoma

Specific Coding for Other specified types of T/NK-cell lymphomaOverview

Non-specific codes like C86 require more characters. Use one of these billable codes instead:

  • C86.0 for Extranodal NK/T-cell lymphoma, nasal type

  • Use C86.00 for Extranodal NK/T-cell lymphoma, nasal type not having achieved remission

  • Use C86.01 for Extranodal NK/T-cell lymphoma, nasal type, in remission

  • C86.1 for Hepatosplenic T-cell lymphoma

  • Use C86.10 for Hepatosplenic T-cell lymphoma not having achieved remission

  • Use C86.11 for Hepatosplenic T-cell lymphoma, in remission

  • C86.2 for Enteropathy-type (intestinal) T-cell lymphoma

  • Use C86.20 for Enteropathy-type (intestinal) T-cell lymphoma not having achieved remission

  • Use C86.21 for Enteropathy-type (intestinal) T-cell lymphoma, in remission

  • C86.3 for Subcutaneous panniculitis-like T-cell lymphoma

  • Use C86.30 for Subcutaneous panniculitis-like T-cell lymphoma not having achieved remission

  • Use C86.31 for Subcutaneous panniculitis-like T-cell lymphoma, in remission

  • C86.4 for Blastic NK-cell lymphoma

  • Use C86.40 for Blastic NK-cell lymphoma not having achieved remission

  • Use C86.41 for Blastic NK-cell lymphoma, in remission

  • C86.5 for Angioimmunoblastic T-cell lymphoma

  • Use C86.50 for Angioimmunoblastic T-cell lymphoma not having achieved remission

  • Use C86.51 for Angioimmunoblastic T-cell lymphoma, in remission

  • C86.6 for Primary cutaneous CD30-positive T-cell proliferations

  • Use C86.60 for Primary cutaneous CD30-positive T-cell proliferations not having achieved remission

  • Use C86.61 for Primary cutaneous CD30-positive T-cell proliferations, in remission

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • anaplastic large cell lymphoma, ALK negative C84.7
  • anaplastic large cell lymphoma, ALK positive C84.6
  • mature T/NK-cell lymphomas C84
  • other specified types of non-Hodgkin lymphoma C85.8

Patient EducationClinical

Lymphoma

Lymphoma is a cancer of a part of the immune system called the lymph system. There are many types of lymphoma. One type is Hodgkin disease. The rest are called non-Hodgkin lymphomas.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C86Overview

Is C86 (Other specified types of T/NK-cell lymphoma) a billable code?

No. This is a category header that groups the codes for other specified types of T/NK-cell lymphoma, and headers cannot be submitted on claims. Claims for other specified types of T/NK-cell lymphoma need a more specific code from this category, such as C86.00, C86.01, and C86.10.