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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Acute Respiratory Infections 460-466 > ICD-9-CM Diagnosis 464 Acute laryngitis and tracheitis 464 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 464.0 Acute laryngitis Inflammation of the larynx. Inflammation of the larynx. This condition presents itself with dryness and soreness of the throat, difficulty in swallowing, cough, and hoarseness. 464.0 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 464.00 Acute laryngitis without obstruction 464.00 is a specific code that can be used to specify a diagnosis 464.00 contains 8 index entries ICD-9-CM Diagnosis 464.01 Acute laryngitis with obstruction 464.01 is a specific code that can be used to specify a diagnosis 464.01 contains 9 index entries ICD-9-CM Diagnosis 464.1 Acute tracheitis 464.1 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 464.10 Acute tracheitis without obstruction 464.10 is a specific code that can be used to specify a diagnosis 464.10 contains 3 index entries ICD-9-CM Diagnosis 464.11 Acute tracheitis with obstruction 464.11 is a specific code that can be used to specify a diagnosis 464.11 contains 4 index entries ICD-9-CM Diagnosis 464.2 Acute laryngotracheitis 464.2 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 464.20 Acute laryngotracheitis without obstruction 464.20 is a specific code that can be used to specify a diagnosis 464.20 contains 6 index entries ICD-9-CM Diagnosis 464.21 Acute laryngotracheitis with obstruction 464.21 is a specific code that can be used to specify a diagnosis 464.21 contains 6 index entries ICD-9-CM Diagnosis 464.3 Acute epiglottitis 464.3 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 464.30 Acute epiglottitis without obstruction 464.30 is a specific code that can be used to specify a diagnosis 464.30 contains 4 index entries ICD-9-CM Diagnosis 464.31 Acute epiglottitis with obstruction 464.31 is a specific code that can be used to specify a diagnosis 464.31 contains 4 index entries ICD-9-CM Diagnosis 464.4 Croup A condition characterized by resonant barking cough, hoarseness and persistant stridor and caused by allergy, foreign body, infection, or neoplasm. It occurs chiefly in infants and children. 464.4 is a specific code that can be used to specify a diagnosis 464.4 contains 5 index entries ICD-9-CM Diagnosis 464.5 Supraglottitis unspecified 464.5 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 464.50 Supraglottitis unspecified without obstruction 464.50 is a specific code that can be used to specify a diagnosis 464.50 contains 1 index entry ICD-9-CM Diagnosis 464.51 Supraglottitis unspecified with obstruction 464.51 is a specific code that can be used to specify a diagnosis 464.51 contains 1 index entry