2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Acute Respiratory Infections 460-466 > 2006 ICD-9-CM Diagnosis 464 Acute laryngitis and tracheitis View the most recent version of ICD-9-CM 464 464 is a non-specific code that cannot be used to specify a diagnosis 464 Excludes that associated with influenza (487.1) that due to Streptococcus (034.0)