2007 ICD-9-CM Procedure 93.90 Continuous positive airway pressure [cpap] A technique of respiratory therapy, in either spontaneously breathing or mechanically ventilated patients, in which airway pressure is maintained above atmospheric pressure throughout the respiratory cycle by pressurization of the ventilatory circuit. (On-Line Medical Dictionary [Internet]. Newcastle upon Tyne(UK): The University Dept. of Medical Oncology: The CancerWEB Project; c1997-2003 [cited 2003 Apr 17]. Available from: http://cancerweb.ncl.ac.uk/omd/) 93.90 is a specific code that can be used to specify a procedure 93.90 contains 9 index entries View the full Volume 3 93.* hierarchy 93.90 also known as: Bi-level airway pressure Non-invasive positive pressure (NIPPV) Index entries containing 93.90: Continuous positive airway pressure (CPAP) 93.90 CPAP (continuous positive airway pressure) 93.90 Therapy continuous positive airway pressure (CPAP) 93.90 respiratory NEC 93.99 bi-level airway pressure 93.90 continuous positive airway pressure [CPAP] 93.90 non-invasive positive pressure (NIPPV) 93.90 Ventilation bi-level airway pressure 93.90 continuous positive airway pressure [CPAP] 93.90 non-invasive positive pressure (NIPPV) 93.90