Chapters in ICD-10-CM classify diseases and injuries according to specific body systems as well as __________

What is the lethal concentration, 50% kill?

a. The amount of a substance, measured in milligrams per body mass, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time b. The concentration of a substance, measured in parts per million, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time c. The concentration of a substance, in milligrams per kilogram (mg/kg), that kills a laboratory animal within 48 hours d. The concentration of a substance to which workers can be exposed continuously for a period of approximately 15 minutes without suffering irritation, chronic or irreversible tissue damage, or narcosis sufficient to increase the risk of accidental injury, impair self-rescue, or materially reduce work-related efficiency

Which of the following is a positive predictive factor in children with precursor B-ALL?

a. High leukocyte count; less than 1 year of age b. Low leukocyte count; 4-10 years of age c. High leukocyte count; PBX1/E2A translocation d. Hyperdiploid chromosomes, high leukocyte count, less than 1 year of age