Lymphoid leukemia (C91)

Browse all the diagnosis codes used for lymphoid leukemia (c91). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Instructional Notations

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • personal history of leukemia Z85.6
  • Neoplasms (C00–D49)

    • Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

        • Lymphoid leukemia (C91)

        • C91 Lymphoid leukemia
        • C91.0 Acute lymphoblastic leukemia [ALL]
        • C91.00 Acute lymphoblastic leukemia not having achieved remission
        • C91.01 Acute lymphoblastic leukemia, in remission
        • C91.02 Acute lymphoblastic leukemia, in relapse
        • C91.1 Chronic lymphocytic leukemia of B-cell type
        • C91.10 Chronic lymphocytic leukemia of B-cell type not having achieved remission
        • C91.11 Chronic lymphocytic leukemia of B-cell type in remission
        • C91.12 Chronic lymphocytic leukemia of B-cell type in relapse
        • C91.3 Prolymphocytic leukemia of B-cell type
        • C91.30 Prolymphocytic leukemia of B-cell type not having achieved remission
        • C91.31 Prolymphocytic leukemia of B-cell type, in remission
        • C91.32 Prolymphocytic leukemia of B-cell type, in relapse
        • C91.4 Hairy cell leukemia
        • C91.40 Hairy cell leukemia not having achieved remission
        • C91.41 Hairy cell leukemia, in remission
        • C91.42 Hairy cell leukemia, in relapse
        • C91.5 Adult T-cell lymphoma/leukemia (HTLV-1-associated)
        • C91.50 Adult T-cell lymphoma/leukemia (HTLV-1-associated) not having achieved remission
        • C91.51 Adult T-cell lymphoma/leukemia (HTLV-1-associated), in remission
        • C91.52 Adult T-cell lymphoma/leukemia (HTLV-1-associated), in relapse
        • C91.6 Prolymphocytic leukemia of T-cell type
        • C91.60 Prolymphocytic leukemia of T-cell type not having achieved remission
        • C91.61 Prolymphocytic leukemia of T-cell type, in remission
        • C91.62 Prolymphocytic leukemia of T-cell type, in relapse
        • C91.9 Lymphoid leukemia, unspecified
        • C91.90 Lymphoid leukemia, unspecified not having achieved remission
        • C91.91 Lymphoid leukemia, unspecified, in remission
        • C91.92 Lymphoid leukemia, unspecified, in relapse
        • C91.A Mature B-cell leukemia Burkitt-type
        • C91.A0 Mature B-cell leukemia Burkitt-type not having achieved remission
        • C91.A1 Mature B-cell leukemia Burkitt-type, in remission
        • C91.A2 Mature B-cell leukemia Burkitt-type, in relapse
        • C91.Z Other lymphoid leukemia
        • C91.Z0 Other lymphoid leukemia not having achieved remission
        • C91.Z1 Other lymphoid leukemia, in remission
        • C91.Z2 Other lymphoid leukemia, in relapse