ICD-10-CM › C00-D49 › C81-C96 › C codes › C91

C91

Lymphoid leukemia

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 9 more specific codes instead:

  • C91.0 Acute lymphoblastic leukemia [ALL] (also a header)
  • C91.1 Chronic lymphocytic leukemia of B-cell type (also a header)
  • C91.3 Prolymphocytic leukemia of B-cell type (also a header)
  • C91.4 Hairy cell leukemia (also a header)
  • C91.5 Adult T-cell lymphoma/leukemia (HTLV-1-associated) (also a header)
  • C91.6 Prolymphocytic leukemia of T-cell type (also a header)
  • C91.9 Lymphoid leukemia, unspecified (also a header)
  • C91.A Mature B-cell leukemia Burkitt-type (also a header)
  • C91.Z Other lymphoid leukemia (also a header)

What has happened to this code

Every change the publisher made, from 2012 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. FY2012 Added to the draft code set draft Lymphoid leukemia

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.

This code

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)