Term	Maps To
cardiac output measurement	Indicator dilution studies such as dye or thermal dilution, including arterial and/or venous catheterization; with cardiac output measurement (separate procedure) (1) Mapped By loom Indicator dilution studies such as dye or thermal dilution, including arterial and/or venous catheterization; subsequent measurement of cardiac output (1) Mapped By loom
creatinine clearance	Creatinine; clearance (1) Mapped By loom
prothrombin time	Prothrombin time (1) Mapped By loom
blood pH	Gases, blood, pH only (1) Mapped By loom