ICD-10 Code B37.6 – Candidal endocarditis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B37.6 – Candidal endocarditis
What it is
B37.6 identifies endocarditis caused by Candida species. It means the heart’s inner lining or valves are infected with a fungal organism rather than bacteria.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include persistent fever, signs of bloodstream infection, and evidence of valve involvement on imaging or clinical exam.
When to use this code
Use B37.6 when the provider documents candidal endocarditis or fungal endocarditis due to Candida. Code it when the diagnosis is established or clearly stated in the record. If documentation only says candidemia or fungal infection without cardiac involvement, do not assume endocarditis.
Do not use for
Do not use this code for non-Candida endocarditis, isolated candidemia, or other localized Candida infections without heart involvement. Check documentation if the organism or site is unclear.
Coding tip
Confirm both the Candida cause and the endocarditis site in the provider note before assigning B37.6.