2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Respiratory System 460-519 > Other Diseases Of Upper Respiratory Tract 470-478 > Other Diseases Of Upper Respiratory Tract 478.* > 2006 ICD-9-CM Diagnosis 478.6 Edema of larynx View the most recent version of ICD-9-CM 478.6 Edema of any region of the larynx from a variety of causes. In the earliest stages it may be difficult to differentiate from infection, although mucosal injection and erythema are found more often in the latter. Allergic edema may result as a response from provocation induced by foods, inhalants, and drugs. The entire respiratory tract or only an isolated portion of the larynx may be affected. Laryngeal edema may also be hereditary. Other possible causes of laryngeal edema include increased capillary pressure due to superior vena cava syndrome, internal jugular vein ligation, lowered plasma osmotic failure induced by renal failure, impaired lymphatic flow, and increased capillary permeability to proteins. 478.6 is a specific code that can be used to specify a diagnosis 478.6 contains 4 index entries View the ICD-9-CM Volume 1 478.* hierarchy Alternate Terminology Edema (of): glottis subglottic supraglottic  Index entries containing 478.6: Edema, edematous 782.3 glottis, glottic, glottides (obstructive) (passive) 478.6 allergic 995.1 hereditary 277.6 due to external agent - see Condition, respiratory, acute, due to specified agent larynx (see also Edema, glottis) 478.6 subglottic (see also Edema, glottis) 478.6 supraglottic (see also Edema, glottis) 478.6