ICD-9-CM 733.6 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 733.6 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).
A benign inflammation of one or more of the costal cartilages
Idiopathic painful nonsuppurative swellings of one or more costal cartilages, especially of the second rib. The anterior chest pain may mimic that of coronary artery disease. (Dorland, 27th ed.)