A21.0
ICD-10-CMThis code represents a systemic bacterial infection caused by Francisella tularensis, characterized by a localized skin ulcer at the site of inoculation and regional lymphadenopathy (swollen lymph nodes). The ulcer is typically painful and slow-healing, often accompanied by fever, chills, and malaise.
Use this code when documentation clearly indicates a diagnosis of tularemia presenting with both a skin ulcer and enlarged, tender regional lymph nodes. This diagnosis is typically confirmed by serology, culture, or PCR.
AI-generated reference — verify against official guidelines