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C84.4

Non-billable

Peripheral T-cell lymphoma, not elsewhere classified

Chapter 2: Neoplasms

Additional Information

From parent codes: C00-D49 (Chapter 2)

NotesFrom C00-D49

Additional notes from parent codes that apply to this code.

  • Functional activity
  • 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.
  • Morphology [Histology]
  • 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.
  • Primary malignant neoplasms overlapping site boundaries
  • 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.
  • Malignant neoplasm of ectopic tissue
  • 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).

More Specific Codes (11)

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→