2007 ICD-9-CM Procedure 89.68 Monitoring of cardiac output by other technique 89.68 is a specific code that can be used to specify a procedure 89.68 contains 9 index entries View the full Volume 3 89.* hierarchy 89.68 also known as: Cardiac output monitor by thermodilution indicator Index entries containing 89.68: Echocardiography 88.72 transesophageal 88.72 monitoring (Doppler) (ultrasound) 89.68 Indicator dilution flow measurement 89.68 Measurement cardiac output (by) indicator dilution technique 89.68 thermodilution indicator 89.68 Monitoring cardiac output (by) indicator dilution technique 89.68 specified technique NEC 89.68 thermodilution indicator 89.68 transesophageal (Doppler) (ultrasound) 89.68 transesophageal cardiac output (Doppler) 89.68