ICD-9-CM 463 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 463 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).
An acute inflammation of the tonsils caused by viruses or bacteria. Signs and symptoms include fever, enlargement of the tonsils, difficulty swallowing, and enlargement of the regional lymph nodes