Code Type	Codes	Description
ICD-9-CM procedure	89.38	Other nonoperative respiratory measurements
	93.90	Noninvasive mechanical ventilation
	93.94	Respiratory medication administered by nebulizer
	93.99	Other respiratory therapy
	96.70	Continuous invasive mechanical ventilation of unspecified duration
	96.71	Continuous invasive mechanical ventilation for less than 96 consecutive hours
	96.72	Continuous invasive mechanical ventilation for 96 consecutive hours or more
ICD-9-CM diagnosis	518.81	Acute respiratory failure
	518.82	Other pulmonary insufficiency, not elsewhere classified
	518.83	Chronic respiratory failure
	518.84	Acute and chronic respiratory failure
	V46.11	Dependence on respirator, status
	V46.12	Encounter for respirator dependence during power failure
	V46.13	Encounter for weaning from respirator [ventilator]
	V46.14	Mechanical complication of respirator [ventilator]
CPT/HCPCS	94002	Ventilation assist and management, initiation of pressure or volume preset ventilators for assisted or controlled breathing; hospital inpatient/observation, initial day
	94003	Ventilation assist and management, initiation of pressure or volume preset ventilators for assisted or controlled breathing; hospital inpatient/observation, each subsequent day
	94004	Ventilation assist and management, initiation of pressure or volume preset ventilators for assisted or controlled breathing; nursing facility, per day
	94005	Home ventilator management care plan oversight of a patient (patient not present) in home, domiciliary or rest home (e.g., assisted living) requiring review of status, review of laboratories and other studies and revision of orders and respiratory care plan (as appropriate), within a calendar month, 30 minutes or more
	94644	Continuous inhalation treatment with aerosol medication for acute airway obstruction; first hour
	94645	Continuous inhalation treatment with aerosol medication for acute airway obstruction; each additional hour (list separately in addition to code for primary procedure)
	94650	Pressure breathing (intermittent positive pressure breathing), initial
	94651	Pressure breathing (intermittent positive pressure breathing), subsequent
	94652	Pressure breathing (intermittent positive pressure breathing), newborn infants
	94656	Ventilation assist and management, initiation of pressure or volume preset ventilators for assisted or controlled breathing; first day
	94657	Ventilation assist and management, initiation of pressure or volume preset ventilators for assisted or controlled breathing; subsequent days
	94660	Continuous positive airway pressure ventilation, initiation and management
	94662	Continuous negative pressure ventilation, initiation and management
	94667	Manipulation chest wall, such as cupping, percussing, and vibration to facilitate lung function; initial demonstration and/or evaluation
	94668	Manipulation chest wall, such as cupping, percussing, and vibration to facilitate lung function; subsequent
	99504	Home visit for mechanical ventilation care
	E0450	Volume control ventilator, without pressure support mode, may include pressure control mode, used with invasive interface (e.g., tracheostomy tube)
	E0453	Therapeutic ventilator; suitable for use 12 hours or less per day
	E0454	Pressure ventilator with pressure control
	E0460	Negative pressure ventilator; portable or stationary
	E0461	Volume control ventilator, without pressure support mode, may include pressure control mode, used with noninvasive interface (e.g., mask)
	E0463	Pressure support ventilator with volume control mode, may include pressure control mode, used with invasive interface (e.g., tracheostomy tube)
	E0464	Pressure support ventilator with volume control mode, may include pressure control mode, used with noninvasive interface (e.g., mask)
	E0470	Respiratory assist device, bi-level pressure capability, without back-up rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device)
	E0471	Respiratory assist device, bi-level pressure capability, with back-up rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device)
	E0472	Respiratory assist device, bi-level pressure capability, with back-up rate feature, used with invasive interface, e.g., tracheostomy tube (intermittent assist device with continuous positive airway pressure device)
	E0480	Percussor, electric or pneumatic, home model
	E0481	Intrapulmonary percussive ventilation system and related accessories
	E0482	Cough stimulating device, alternating positive and negative airway pressure
	E0483	High frequency chest wall oscillation air-pulse generator system (includes hoses and vest), each
	E0484	Oscillatory positive expiratory pressure device, nonelectric, any type, each
	E0485	Oral device/appliance used to reduce upper airway collapsibility, adjustable or nonadjustable, prefabricated, includes fitting and adjustment
	E0486	Oral device/appliance used to reduce upper airway collapsibility, adjustable or nonadjustable, custom fabricated, includes fitting and adjustment
	E0500	Intermittent positive pressure breathing machine, all types, with built-in nebulization; manual or automatic valves; internal or external power source
	G0237	Therapeutic procedures to increase strength or endurance of respiratory muscles, face to face, one on one, each 15 minutes (includes monitoring)
	G0238	Therapeutic procedures to improve respiratory function, other than described by G0237, one on one, face to face, per 15 minutes (includes monitoring)
	G0239	Therapeutic procedures to improve respiratory function or increase strength or endurance of respiratory muscles, 2 or more individuals (includes monitoring)
	G0424	Pulmonary rehabilitation, including exercise (includes monitoring), 1 hour, per session, up to 2 sessions per day
	S5180	Home health respiratory therapy, initial evaluation
	S5181	Home health respiratory therapy, not otherwise specified, per diem
	S9473	Pulmonary rehabilitation program, nonphysician provider, per diem

CPT = Current Procedural Terminology; HCPCS = Healthcare Common Procedure Coding System; ICD-9-CM = International Classification of Diseases, Ninth Revision, Clinical Modification.