C94.3Non-Billable (Header)Mast cell leukemiaChild CodesC94.30Mast cell leukemia not having achieved remissionHCC 20C94.31Mast cell leukemia, in remissionHCC 20C94.32Mast cell leukemia, in relapseHCC 20Code Hierarchy└C94Other leukemias of specified cell type└C94.3Mast cell leukemia└C94.3Mast cell leukemia