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.
Respiratory failure/Pneumocystis carinii/AIDS. Respiratory failure due to Pneumocystis carinii which is due to AIDS is assigned code 042, Human. Immunodeficiency Virus, and sequenced as the principal diagnosis. Acute respiratory failure, 518.81, with pneumocystosis, 136.3, are sequenced as secondary diagnoses.