2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Acute Respiratory Infections 460-466 > Acute Laryngitis And Tracheitis 464.* > 2006 ICD-9-CM Diagnosis 464.1 Acute tracheitis View the most recent version of ICD-9-CM 464.1 464.1 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 464.* hierarchy Alternate Terminology Tracheitis (acute): NOS catarrhal viral 464.1 Excludes chronic tracheitis (491.8)