2007 ICD-9-CM Procedure 89.38 Other nonoperative respiratory measurements A type of impedance plethysmography in which bioelectrical impedance is measured between electrodes positioned around the neck and around the lower thorax. It is used principally to calculate stroke volume and cardiac volume, but it is also related to myocardial contractility, thoracic fluid content, and circulation to the extremities. 89.38 is a specific code that can be used to specify a procedure 89.38 contains 9 index entries View the full Volume 3 89.* hierarchy 89.38 also known as: Plethysmography for measurement of respiratory function Thoracic impedance plethysmography Index entries containing 89.38: Bronchospirometry 89.38 Expiratory flow rate 89.38 Function study -- see also Scan, radioisotope pulmonary -- see categories 89.37-89.38 Measurement airway resistance 89.38 respiratory NEC 89.38 Plethysmogram (carotid) 89.58 respiratory function measurement (body) 89.38 thoracic impedance 89.38 Quotient, respiratory 89.38 Study pulmonary function -- see categories 89.37-89.38