C84.Z
C84.Z: Other mature T/NK-cell lymphomas
Non-billable headerICD-10-CM
C84.Z is a non-billable header ICD-10-CM code for other mature t/nk-cell lymphomas. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- 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-)
Notes
Additional guidance from the ICD-10-CM tabular list.
- If T-cell lineage or involvement is mentioned in conjunction with a specific lymphoma, code to the more specific description.
Other codes that can never be billed with C84.Z
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead C84.Z
11 child codes. Green means billable.
- C84.Z0Other mature T/NK-cell lymphomas, unspecified site
- C84.Z1Other mature T/NK-cell lymphomas, lymph nodes of head, face, and neck
- C84.Z2Other mature T/NK-cell lymphomas, intrathoracic lymph nodes
- C84.Z3Other mature T/NK-cell lymphomas, intra-abdominal lymph nodes
- C84.Z4Other mature T/NK-cell lymphomas, lymph nodes of axilla and upper limb
- C84.Z5Other mature T/NK-cell lymphomas, lymph nodes of inguinal region and lower limb
- C84.Z6Other mature T/NK-cell lymphomas, intrapelvic lymph nodes
- C84.Z7Other mature T/NK-cell lymphomas, spleen
- C84.Z8Other mature T/NK-cell lymphomas, lymph nodes of multiple sites
- C84.Z9Other mature T/NK-cell lymphomas, extranodal and solid organ sites
- C84.ZAOther mature T/NK-cell lymphomas, in remission