Allescheriasis

This code represents an infection caused by fungi of the genus Scedosporium (formerly Allescheria or Pseudallescheria). It can manifest as localized infections, such as sinusitis or osteomyelitis, or as disseminated disease, particularly in immunocompromised individuals. The infection is often acquired through inhalation of spores or direct inoculation into wounds.

Use this code when documentation explicitly states a diagnosis of allescheriasis or Scedosporium infection. This diagnosis is typically confirmed by mycological culture and identification of the causative organism from tissue biopsies, aspirates, or other clinical specimens. Clinical scenarios include chronic sinusitis, pneumonia, or disseminated disease attributed to Scedosporium.

• Ensure the physician's documentation clearly specifies Allescheria or Scedosporium as the causative agent.
• Do not confuse this systemic fungal infection with eumycetoma, which is excluded and coded separately.
• Always review the patient's medical record for any underlying conditions (e.g., immunocompromised status) that may require additional codes.