C86.40 – Blastic NK-cell lymphoma not having achieved remission

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lymphoid, hematopoietic and related tissue

Billable code

ICD-10-CM code C86.40
Code
C86.40 (claims format: C8640)
Description
Blastic NK-cell lymphoma not having achieved remission
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
2. Neoplasms (C00-D49)
Block
C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue
Parent codes
C86 › C86.4

Notes for C86.40

Applicable to:
  • Blastic NK-cell lymphoma NOS
  • Blastic NK-cell lymphoma with failed remission
  • Blastic plasmacytoid dendritic cell neoplasm (BPDCN) NOS
  • Blastic plasmacytoid dendritic cell neoplasm (BPDCN) not having achieved remission
  • Blastic plasmacytoid dendritic cell neoplasm (BPDCN) with failed remission

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

C86 – Other specified types of T/NK-cell lymphoma

Excludes1 (not coded here):
  • 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-)

C86.4 – Blastic NK-cell lymphoma

Applicable to:
  • Blastic plasmacytoid dendritic cell neoplasm (BPDCN)

Block C81-C96

Excludes2 (not included here):
  • Kaposi's sarcoma of lymph nodes (C46.3)
  • secondary and unspecified neoplasm of lymph nodes (C77.-)
  • secondary neoplasm of bone marrow (C79.52)
  • secondary neoplasm of spleen (C78.89)

Related codes in C86.4

Frequently asked questions

What is ICD-10 code C86.40?

C86.40 is the ICD-10-CM code for blastic NK-cell lymphoma not having achieved remission, in the block C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).

Is C86.40 a billable code?

Yes. C86.40 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C86.40 belong to?

It belongs to category C86 – Other specified types of T/NK-cell lymphoma.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.