C91 Lymphoid leukemia
ICD-10-CM category C91 sits in Chapter 2 (Neoplasms, C00-D49). It contains 27 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
C91.0 Acute lymphoblastic leukemia [ALL]C91.1 Chronic lymphocytic leukemia of B-cell typeC91.3 Prolymphocytic leukemia of B-cell typeC91.4 Hairy cell leukemiaC91.5 Adult T-cell lymphoma/leukemia (HTLV-1-associated)C91.6 Prolymphocytic leukemia of T-cell typeC91.9 Lymphoid leukemia, unspecifiedC91.A Mature B-cell leukemia Burkitt-typeC91.Z Other lymphoid leukemia
Billable codes in C91
| Code | Description |
|---|---|
C91.00 | Acute lymphoblastic leukemia not having achieved remission |
C91.01 | Acute lymphoblastic leukemia, in remission |
C91.02 | Acute lymphoblastic leukemia, in relapse |
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 |
C91.30 | 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 |
C91.40 | Hairy cell leukemia not having achieved remission |
C91.41 | Hairy cell leukemia, in remission |
C91.42 | Hairy cell leukemia, in relapse |
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 |
C91.60 | 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 |
C91.90 | Lymphoid leukemia, unspecified not having achieved remission |
C91.91 | Lymphoid leukemia, unspecified, in remission |
C91.92 | Lymphoid leukemia, unspecified, in relapse |
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.Z0 | Other lymphoid leukemia not having achieved remission |
C91.Z1 | Other lymphoid leukemia, in remission |
C91.Z2 | Other lymphoid leukemia, in relapse |
Search within ICD-10-CM for C91 and related codes
Advertisement