ICD-10-CM 2027 diagnosis code
C86Other specified types of T/NK-cell lymphoma
C86 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About C86
C86 is the ICD-10-CM diagnosis code for other specified types of T/NK-cell lymphoma. It belongs to block C81-C96 (malignant neoplasms of lymphoid, hematopoietic and related tissue) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: C86.0 (type), C86.1 (lymphoma), C86.2 (lymphoma), C86.3 (lymphoma), C86.4 (lymphoma), C86.5 (lymphoma) and C86.6 (proliferations).
Don't report C86 together with the conditions in its Excludes1 note: anaplastic large cell lymphoma, ALK negative (C84.7-), anaplastic large cell lymphoma, ALK positive (C84.6-), mature T/NK-cell lymphomas (C84.-) and other specified types of non-Hodgkin lymphoma (C85.8-).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under C86
- C86.0Extranodal NK/T-cell lymphoma, nasal type
- C86.1Hepatosplenic T-cell lymphoma
- C86.2Enteropathy-type (intestinal) T-cell lymphoma
- C86.3Subcutaneous panniculitis-like T-cell lymphoma
- C86.4Blastic NK-cell lymphoma
- C86.5Angioimmunoblastic T-cell lymphoma
- C86.6Primary cutaneous CD30-positive T-cell proliferations
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to C86.
Broader instructions also apply from C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue and Chapter 2: Neoplasms.
Codes whose notes reference C86
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about C86
Is C86 billable?
- No. C86 is a header code. Report one of its more specific subcodes instead.