Faucial diphtheria

This code represents diphtheria specifically affecting the fauces, which are the arched opening at the back of the mouth leading to the pharynx. It is an acute, highly contagious bacterial infection characterized by the formation of a pseudomembrane on the tonsils, pharynx, or larynx, leading to potential airway obstruction and systemic toxemia.

Assign this code when documentation clearly indicates a diagnosis of diphtheria with the primary site of infection identified as the fauces. Supporting documentation would include physician notes detailing the characteristic pseudomembrane formation in the throat, positive bacterial cultures for Corynebacterium diphtheriae, and clinical signs of toxemia.

• Ensure the documentation specifies the faucial region; otherwise, a more general diphtheria code may be appropriate.
• Do not confuse with other forms of diphtheria, such as laryngeal or cutaneous, which have distinct codes.
• Always check for any associated complications, such as myocarditis or polyneuropathy, and code them separately.