ICD-10-CM Diagnosis Code (2025)
Official Description for C84
Mature T/NK-cell lymphomas
Coding Notes & Guidelines for C84
personal history of non-Hodgkin lymphoma (Z85.72)
peripheral T-cell lymphoma, not elsewhere classified (C84.4-)
primary cutaneous CD30-positive T-cell proliferations (C86.6-)
- angioimmunoblastic T-cell lymphoma (C86.50)
- blastic NK-cell lymphoma (C86.40)
- enteropathy-type T-cell lymphoma (C86.20)
- extranodal NK-cell lymphoma, nasal type (C86.00)
- hepatosplenic T-cell lymphoma (C86.10)
- primary cutaneous CD30-positive T-cell proliferations (C86.60)
- subcutaneous panniculitis-like T-cell lymphoma (C86.30)
- T-cell leukemia (C91.1-)
mature T-cell lymphoma, not elsewhere classified (C84.4-)
- code to identify:
- breast implant status (Z98.82)
- personal history of breast implant removal (Z98.86)
- Lennert's lymphoma
- Lymphoepithelioid lymphoma
- Mature T-cell lymphoma, not elsewhere classified
Anaplastic large cell lymphoma, CD30-positive
Breast implant associated anaplastic large cell lymphoma (BIA-ALCL)
NK/T cell lymphoma NOS
Child Codes (More Specific Codes for C84):
About ICD-10-CM Code C84 (Mature T/NK-cell lymphomas)
ICD-10-CM code C84 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM C84 became effective on October 1, 2024.
This page provides detailed information about C84 - Mature T/NK-cell lymphomas. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Mature T/NK-cell lymphomas.