Table 1.

SMA1 diagnosis and procedure codes

Ventilation procedure codesa
96.01	Insertion of nasopharyngeal airway
96.02	Insertion of oropharyngeal airway
96.03	Insertion of esophageal obturator airway
96.04	Insertion of endotracheal tube
96.05	Other intubation of respiratory tract
93.90	Non-invasive mechanical ventilation
96.70	Continuous invasive mechanical ventilation of unspecified duration
96.71	Continuous invasive mechanical ventilation for < 96 consecutive hours
96.72	Continuous invasive mechanical ventilation for ≥ 96 consecutive hours
31.2	Permanent tracheostomy
31.1	Temporary tracheostomy
97.23	Replace tracheostomy tube
97.37	Removal of tracheostomy tube
31.41	Tracheoscopy through artificial stoma
31.72	Closure of external fistula of trachea
31.73	Closure of other fistula of trachea
31.74	Revision of tracheostomy
93.91	Intermittent positive pressure breathing
93.99	Other respiratory procedures
Ventilation diagnosis codes
V44.0	Tracheostomy status
V55.0	Attention to tracheostomy
519.00	Tracheostomy complication, unspecified
519.01	Infection of tracheostomy
519.02	Mechanical complication of tracheostomy
519.09	Other tracheostomy complications
Nutrition procedure codesb
96.6	Enteral infusion of concentrated nutritional substances
96.07	Insertion of other nasogastric tube
99.15	Parenteral infusion of concentrated nutritional substances
43.19	Other gastrostomy
43.11	Percutaneous endoscopic gastrostomy
96.36	Irrigation of gastrostomy or enterostomy
97.02	Replacement of gastrostomy tube
46.32	Percutaneous (endoscopic) jejunostomy
44.99	Other
96.07	Insertion of nasogastric tube
96.34	Irrigation of nasogastric tube
97.01	Replacement of nasogastric tube
97.02	Change of gastrostomy tube

^aHospitalization records that included at least one of the following procedure or diagnosis codes are considered as having ‘ventilatory support’

^bHospitalization records that included at least one of the following procedure codes are considered as having ‘nutritional support’