All ICD10 Codes

C84

Non-Billable
ChapterC00–D49
Rankcategory
Official Description

Mature T/NK-cell lymphomas

Use a more specific code (0 billable, 8 non-billable)
C84.0Mycosis fungoideshas subcodesC84.1Sézary diseasehas subcodesC84.4Peripheral T-cell lymphoma, not elsewhere classifiedhas subcodesC84.6Anaplastic large cell lymphoma, ALK-positivehas subcodesC84.7Anaplastic large cell lymphoma, ALK-negativehas subcodesC84.9Mature T/NK-cell lymphomas, unspecifiedhas subcodesC84.ACutaneous T-cell lymphoma, unspecifiedhas subcodesC84.ZOther mature T/NK-cell lymphomashas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 2: Neoplasms (C00-D49).

C81-C96 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • personal history of non-Hodgkin lymphoma (Z85.72)

Clinical Hierarchy

BillableHas subcodes
CH2Neoplasms (C00-D49)
C81-C96Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
C84Mature T/NK-cell lymphomasNot billable
C84.0Mycosis fungoidesSubcodes
C84.1Sézary diseaseSubcodes
C84.4Peripheral T-cell lymphoma, not elsewhere classifiedSubcodes
C84.6Anaplastic large cell lymphoma, ALK-positiveSubcodes
C84.7Anaplastic large cell lymphoma, ALK-negativeSubcodes
C84.9Mature T/NK-cell lymphomas, unspecifiedSubcodes
C84.ACutaneous T-cell lymphoma, unspecifiedSubcodes
C84.ZOther mature T/NK-cell lymphomasSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to C84:

blockC81-C96
Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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