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.
Risk adjustment
C84.Z does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
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
Related codes at this level
Codes that share C84. If C84.Z is not quite right, the correct code is usually one of these.
Questions about C84.Z
- Is C84.Z a billable ICD-10-CM code?
- No. C84.Z is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does C84.Z sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).
- What cannot be coded together with C84.Z?
- C84.Z carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.