Non-Billable / Non-Specific Code
ICD-10-CM C86 is the diagnosis code for Other specified types of T/NK-cell lymphoma. This code falls under the section "Malignant neoplasms of lymphoid, hematopoietic and related tissue" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as C86. They are mutually exclusive:
Understanding where C86 sits in the ICD-10-CM classification helps ensure proper coding:
No, C86 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
C86 is the ICD-10-CM diagnosis code for "Other specified types of T/NK-cell lymphoma". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
C86 is located in Section C81-C96 — "Malignant neoplasms of lymphoid, hematopoietic and related tissue" within Chapter 2 of the ICD-10-CM Tabular List.
C86 has 7 sub-code(s) that provide more specific detail: C86.0, C86.1, C86.2, C86.3, C86.4 and more.
Use C86 when the patients documented diagnosis matches "Other specified types of T/NK-cell lymphoma" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other specified types of T/NK-cell lymphoma is C86.
No, C86 is non-billable. Use a more specific sub-code for primary diagnosis billing.
C86 is in Chapter 2 of the ICD-10-CM Tabular List.
Type 1 Excludes for C86 include: anaplastic large cell lymphoma, ALK negative (C84.7-); anaplastic large cell lymphoma, ALK positive (C84.6-); mature T/NK-cell lymphomas (C84.-) and more.
Yes, C86 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.