C91 - Lymphoid leukemia
C91.0 - Acute lymphoblastic leukemia [ALL]
notes:
-CodeC91.0 should only be used for T-cell and B-cell precursor leukemia
C91.00 - Acute lymphoblastic leukemia not having achieved remission
C91.01 - Acute lymphoblastic leukemia, in remission
C91.02 - Acute lymphoblastic leukemia, in relapse