ICD-10-CM › C00-D49 › C81-C96 › C91.5 Adult T-cell lymphoma/leukemia... › C91.50

C91.50

Adult T-cell lymphoma/leukemia (HTLV-1-associated) not having achieved remission

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Adult T-cell leukemia, not in remission
  2. FY2010 Draft description revised draft Adult T-cell leukemia, not in remission Adult T-cell lymphoma/leukemia (HTLV-1-associated) not having achieved remission

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from C91 Lymphoid leukemia

Excludes1 - never coded here

  • personal history of leukemia (Z85.6)

Inherited from the C81-C96 section Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

Excludes2 - not included here

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
C91.51 Adult T-cell lymphoma/leukemia (HTLV-1-associated), in remission Valid
C91.52 Adult T-cell lymphoma/leukemia (HTLV-1-associated), in relapse Valid