C84.Z1

Other mature T/NK-cell lymphomas, lymph nodes of head, face, and neck

Billable / specificHCC V28 20

C84.Z1 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from C84)

  • Note: Functional activity
  • Note: All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Note: Morphology [Histology]
  • Note: Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Note: Primary malignant neoplasms overlapping site boundaries
  • Note: A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Note: Malignant neoplasm of ectopic tissue
  • Note: Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Includes (from C84.Z)

  • Note: If T-cell lineage or involvement is mentioned in conjunction with a specific lymphoma, code to the more specific description.

Excludes1

Not coded here — never report together with this code.

  • angioimmunoblastic T-cell lymphoma (C86.50) (from C84.Z)
  • blastic NK-cell lymphoma (C86.40) (from C84.Z)
  • enteropathy-type T-cell lymphoma (C86.20) (from C84.Z)
  • extranodal NK-cell lymphoma, nasal type (C86.00) (from C84.Z)
  • hepatosplenic T-cell lymphoma (C86.10) (from C84.Z)
  • primary cutaneous CD30-positive T-cell proliferations (C86.60) (from C84.Z)
  • subcutaneous panniculitis-like T-cell lymphoma (C86.30) (from C84.Z)
  • T-cell leukemia (C91.1-) (from C84.Z)
  • personal history of non-Hodgkin lymphoma (Z85.72) (from C84)

Excludes2

Not included here — may be reported together when both conditions exist.

  • Kaposi's sarcoma of lymph nodes (C46.3) (from C84)
  • secondary and unspecified neoplasm of lymph nodes (C77.-) (from C84)
  • secondary neoplasm of bone marrow (C79.52) (from C84)
  • secondary neoplasm of spleen (C78.89) (from C84)

Parent code

  • C84.ZOther mature T/NK-cell lymphomasHeader

Related codes

  • C84.Z0Other mature T/NK-cell lymphomas, unspecified siteBillable
  • C84.Z2Other mature T/NK-cell lymphomas, intrathoracic lymph nodesBillable
  • C84.Z3Other mature T/NK-cell lymphomas, intra-abdominal lymph nodesBillable
  • C84.Z4Other mature T/NK-cell lymphomas, lymph nodes of axilla and upper limbBillable
  • C84.Z5Other mature T/NK-cell lymphomas, lymph nodes of inguinal region and lower limbBillable
  • C84.Z6Other mature T/NK-cell lymphomas, intrapelvic lymph nodesBillable
  • C84.Z7Other mature T/NK-cell lymphomas, spleenBillable
  • C84.Z8Other mature T/NK-cell lymphomas, lymph nodes of multiple sitesBillable
  • C84.Z9Other mature T/NK-cell lymphomas, extranodal and solid organ sitesBillable
  • C84.ZAOther mature T/NK-cell lymphomas, in remissionBillable

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