ICD-10 Code B38.0 – Acute pulmonary coccidioidomycosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B38.0 – Acute pulmonary coccidioidomycosis
What it is
B38.0 identifies an acute lung infection caused by Coccidioides species, commonly acquired by inhaling fungal spores. Use it for the pulmonary form when the infection is newly active and documented as acute.
Clinical signs
Typical findings include cough, fever, chest discomfort, and shortness of breath after exposure in an endemic area. Clinical features vary; refer to documentation for confirmed pulmonary involvement.
When to use this code
Use B38.0 when the provider documents acute pulmonary coccidioidomycosis, valley fever, or coccidioidal pneumonia affecting the lungs. It fits cases diagnosed clinically, by imaging, or with supportive microbiology when the record states an acute pulmonary infection.
Do not use for
Do not use this code for disseminated coccidioidomycosis, meningitis, or chronic pulmonary disease unless the record specifically supports acute lung infection. Check documentation if the site or disease stage is unclear.
Coding tip
Code the condition exactly as documented and confirm whether the infection is pulmonary only or part of a broader coccidioidomycosis diagnosis.