ICD-9-CM 464.4 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 464.4 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Inflammation involving the glottis or vocal cords and the subglottic larynx. Croup is characterized by a barking cough, hoarseness, and persistent inspiratory stridor (a high-pitched breathing sound). It occurs chiefly in infants and children