Other mycoses, not elsewhere classified (B48)
The ICD-10 code B48 section covers various uncommon fungal infections collectively called "Other mycoses, not elsewhere classified." These codes are used to identify infections such as lobomycosis, rhinosporidiosis, allescheriasis, geotrichosis, penicillosis, and other specified mycoses that do not fit into more common fungal infection categories.
This section provides medical coders and healthcare providers with specific codes to document rare fungal diseases. For instance, B48.0 refers to lobomycosis, also known as primary lobomycotic nodule or chronic coalescent cutaneous lobomycosis, an infection caused by the fungus Lacazia. B48.1 is for rhinosporidiosis, which includes conditions like rhinosporidial mucosal polyp or cutaneous rhinosporidiosis linked to Rhinosporidium infection. B48.4 identifies penicillosis, from infections by various Penicillium species including Talaromyces marneffei. The code B48.8 covers a broad spectrum of other specified fungal infections, such as fungal keratitis and disseminated phaeohyphomycosis, caused by different rare fungi like Fusarium or Scedosporium. Using these specific ICD-10 codes ensures accurate clinical documentation and helps distinguish uncommon fungal diseases in medical records.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Cerebral Phaeohyphomycosis
CNS infections caused by neurotropic dematiaceous fungi that contain melanin in their cell walls. The infections often result in BRAIN ABSCESS; ENCEPHALITIS; and MENINGITIS in patients who are often immunocompetent. The common causative fungi include members Cladophialophora bantiana, Exophiala dermatitidis, Rhinocladiella mackenziei, and Ochroconis gallopavum. R. mackenziei infection is seen almost exclusively in patients from the MIDDLE EAST.
Geotrichosis
Infection due to the fungus Geotrichum.
Lobomycosis
A chronic, fungal, subcutaneous infection endemic in rural regions in South America and Central America. The causal organism is Lacazia labol.
Phaeohyphomycosis
OPPORTUNISTIC INFECTIONS caused by the dematiaceous (darkly pigmented) MITOSPORIC FUNGI of ALTERNARIA, Bipolaris, CLADOSPORIUM, Curvularia, and EXOPHIALA. These fungi have pigmented HYPHAE due to MELANIN in the cell wall. The initial subcutaneous cyst from the infection can become systemic and spread rapidly to renal, pulmonary and cerebral systems (see CEREBRAL PHAEOHYPHOMYCOSIS) in an IMMUNOCOMPROMISED HOST.
Rhinosporidiosis
Chronic, localized granulomatous infection of mucocutaneous tissues, especially the NOSE, and characterized by HYPERPLASIA and the development of POLYPS. It is found in humans and other animals and is caused by the mesomycetozoean organism RHINOSPORIDIUM SEEBERI.
Trichosporonosis
Fungal infections caused by TRICHOSPORON that may become systemic especially in an IMMUNOCOMPROMISED HOST. Clinical manifestations range from superficial cutaneous infections to systemic lesions in multiple organs.
