C84.4 — Peripheral T-cell lymphoma, not elsewhere classified
C84.4 is a non-billable header ICD-10-CM code for peripheral t-cell lymphoma, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Lennert's lymphoma
- Lymphoepithelioid lymphoma
- Mature T-cell lymphoma, not elsewhere classified
Other codes that can never be billed with C84.4
These codes carry an Excludes1 note pointing at C84.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C84.4 alone.
Risk adjustment
C84.4 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 C84.4
11 child codes. Green means billable.
- C84.40Peripheral T-cell lymphoma, not elsewhere classified, unspecified site
- C84.41Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of head, face, and neck
- C84.42Peripheral T-cell lymphoma, not elsewhere classified, intrathoracic lymph nodes
- C84.43Peripheral T-cell lymphoma, not elsewhere classified, intra-abdominal lymph nodes
- C84.44Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of axilla and upper limb
- C84.45Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of inguinal region and lower limb
- C84.46Peripheral T-cell lymphoma, not elsewhere classified, intrapelvic lymph nodes
- C84.47Peripheral T-cell lymphoma, not elsewhere classified, spleen
- C84.48Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of multiple sites
- C84.49Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites
- C84.4APeripheral T-cell lymphoma, not elsewhere classified, in remission
Related codes at this level
Codes that share C84. If C84.4 is not quite right, the correct code is usually one of these.
Questions about C84.4
- Is C84.4 a billable ICD-10-CM code?
- No. C84.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does C84.4 sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).