B40 is the ICD-10 code for Blastomycosis. It is a three-character category divided into 7 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block B35–B49 (Mycoses) in Chapter I, Certain infectious and parasitic diseases.
- Code type
- Category (3 characters)
- Chapter
- I · A00–B99
- Classification
- WHO ICD-10, 2019 version
What B40 excludes
Conditions that look similar but belong under another code.
Subcodes of B40
B40 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
B40Blastomykos
DB40Blastomykose
B40Blastomykoosi
B40Blastomykose
B40Blastomycose
B40blastomycose
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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