C91.62

Prolymphocytic leukemia of T-cell type, in relapse

Billable / specificHCC V28 19

C91.62 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from C91)

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

Excludes1

Not coded here — never report together with this code.

  • personal history of leukemia (Z85.6) (from C91)

Excludes2

Not included here — may be reported together when both conditions exist.

  • Kaposi's sarcoma of lymph nodes (C46.3) (from C91)
  • secondary and unspecified neoplasm of lymph nodes (C77.-) (from C91)
  • secondary neoplasm of bone marrow (C79.52) (from C91)
  • secondary neoplasm of spleen (C78.89) (from C91)

Parent code

  • C91.6Prolymphocytic leukemia of T-cell typeHeader

Related codes

  • C91.60Prolymphocytic leukemia of T-cell type not having achieved remissionBillable
  • C91.61Prolymphocytic leukemia of T-cell type, in remissionBillable

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