For example: char a; a= getchar(); The function getchar() reads a single character from the standard input device, the keyboard being assumed because that is the standard input device, and assigns it to the variable a.
This excludes acute and chronic respiratory failure (518.84), acute respiratory distress (518.82), acute respiratory failure following trauma and surgery (518.51), chronic respiratory failure (518.83), respiratory arrest (799.1), and respiratory failure, newborn (770.84). This applies to respiratory failure NOS.
J96.9 is NOT a valid or complete ICD 10 diagnosis code. See below for more specifc codes relating to Respiratory failure, unspecified. 1  J96.90 - Respiratory failure, unspecified, unspecified whether with hypoxia or hypercapnia.  J96.91 - Respiratory failure, unspecified with hypoxia.