ICD-10 Code B42.0 – Pulmonary sporotrichosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B42.0 – Pulmonary sporotrichosis
What it is
B42.0 identifies sporotrichosis involving the lungs, a fungal infection caused by Sporothrix species. Use it when documentation specifies pulmonary disease rather than skin, lymphatic, or disseminated involvement.
Clinical signs
Clinical features vary; refer to documentation. Pulmonary cases may present with cough, chest discomfort, dyspnea, or abnormal chest imaging, but these findings are not specific to this code alone.
When to use this code
Use B42.0 when the provider documents pulmonary sporotrichosis, fungal pneumonia due to Sporothrix, or lung involvement from confirmed sporotrichosis. Apply it only when the respiratory site is clearly identified in the record. If the infection is limited to skin or lymph nodes, choose a different code.
Do not use for
Do not use this code for cutaneous, lymphocutaneous, or disseminated sporotrichosis unless the lungs are specifically involved. Check documentation if the record only says “sporotrichosis” without a site.
Coding tip
Confirm the anatomic site in the provider note; site specificity drives correct code assignment.