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 464.21 Acute laryngotracheitis with obstruction View the most recent version of ICD-9-CM 464.21 464.21 is a specific code that can be used to specify a diagnosis 464.21 contains 6 index entries View the ICD-9-CM Volume 1 464.* hierarchy  Index entries containing 464.21: Laryngitis (acute) (edematous) (fibrinous) (gangrenous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative) (viral) 464.00 with tracheitis (see also Laryngotracheitis) 464.20 with obstruction 464.21 acute 464.20 with obstruction 464.21 Laryngotracheitis (acute) (infectional) (viral) (see also Laryngitis) 464.20 with obstruction 464.21 H. influenzae 464.20 with obstruction 464.21 spasmodic 478.75 acute 464.20 with obstruction 464.21 Tracheitis (acute) (catarrhal) (infantile) (membranous) (plastic) (pneumococcal) (septic) (suppurative) (viral) 464.10 with laryngitis (acute) 464.20 with obstruction 464.21