C84.4 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Peripheral T-cell lymphoma, not elsewhere classified.
Inclusion term
Lennert's lymphoma
Lymphoepithelioid lymphoma
Mature T-cell lymphoma, not elsewhere classified
Codes
C84.40
Peripheral T-cell lymphoma, not elsewhere classified, unspecified site
C84.41
Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of head, face, and neck
C84.42
Peripheral T-cell lymphoma, not elsewhere classified, intrathoracic lymph nodes
C84.43
Peripheral T-cell lymphoma, not elsewhere classified, intra-abdominal lymph nodes
C84.44
Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of axilla and upper limb
C84.45
Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of inguinal region and lower limb
C84.46
Peripheral T-cell lymphoma, not elsewhere classified, intrapelvic lymph nodes
C84.47
Peripheral T-cell lymphoma, not elsewhere classified, spleen
C84.48
Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of multiple sites
C84.49
Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites
C84.4A
Peripheral T-cell lymphoma, not elsewhere classified, in remission
Versions
2026
No changes
2025
No changes
2024
No changes
2023
Code changed
Description
Peripheral T-cell lymphoma, not classified
- Peripheral T-cell lymphoma, not elsewhere classified
Short description
Peripheral T-cell lymphoma, not classified
- Peripheral T-cell lymphoma, not elsewhere classified
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code