Laryngeal diphtheria

This code describes diphtheria specifically affecting the larynx, a severe bacterial infection characterized by the formation of a pseudomembrane that can obstruct the airway. Laryngeal diphtheria is a life-threatening condition due to the risk of respiratory compromise and systemic toxemia.

Assign this code for confirmed cases of diphtheria where the primary site of infection is documented as the larynx. Documentation should clearly indicate the presence of laryngeal involvement, often presenting with hoarseness, stridor, and difficulty breathing.

• Ensure documentation specifies laryngeal involvement to differentiate from other forms of diphtheria.
• Code any associated systemic manifestations or complications, such as myocarditis or polyneuropathy, separately.
• This is a legacy ICD-9-CM code; for current encounters, refer to the appropriate ICD-10-CM code (A36.2).