Mixed pediculosis and phthiriasis

This code signifies a co-infestation of the human body by both lice (Pediculosis) and pubic lice or crabs (Phthiriasis). It indicates the presence of more than one type of louse infestation simultaneously.

Use this code when documentation explicitly states the presence of both Pediculus humanus (head or body lice) and Pthirus pubis (pubic lice) in the same patient. This typically occurs when a patient presents with symptoms and signs consistent with multiple louse infestations, confirmed by visual inspection.

• Ensure documentation clearly specifies the presence of both types of lice; do not assume mixed infestation if only one type is mentioned.
• Do not use this code if only one type of louse infestation is present; instead, use the specific code for pediculosis (B85.0-B85.2) or phthiriasis (B85.3).
• Consider any associated symptoms or complications (e.g., secondary infection) and code them additionally.