Allescheriosis [Petriellidosis]

This code represents an infection caused by fungi of the genus Scedosporium (formerly Allescheria or Petriellidium), which can manifest as localized infections (e.g., skin, soft tissue, sinuses) or disseminated disease, particularly in immunocompromised individuals. It is a rare but potentially severe opportunistic mycosis.

Use this code when documentation explicitly states a diagnosis of allescheriosis, petriellidosis, or Scedosporium infection. This diagnosis is typically confirmed through fungal culture, histopathology, or molecular testing. Clinical scenarios include chronic sinusitis, osteomyelitis, pneumonia, or disseminated infection in transplant recipients or patients with hematologic malignancies.

• Ensure documentation specifies Scedosporium or its former names; do not use for other fungal infections.
• Always look for documentation of the specific site of infection, as additional codes may be required to fully describe the patient's condition.
• Consider sequencing this code after any underlying immunocompromising condition, if applicable, as the latter often predisposes to this opportunistic infection.