B40
⚠ Non-billable
Blastomycosis
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
B40
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code B40?
ICD-10-CM code B40 represents Blastomycosis. It is a non-billable header code requiring a more specific subcategory in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is B40 billable?
No. B40 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is B40 in?
B40 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
Related codes in the B40 category
B40.0
Acute pulmonary blastomycosis
Billable
B40.1
Chronic pulmonary blastomycosis
Billable
B40.2
Pulmonary blastomycosis, unspecified
Billable
B40.3
Cutaneous blastomycosis
Billable
B40.7
Disseminated blastomycosis
Billable
B40.8
Other forms of blastomycosis
Non-billable
B40.9
Blastomycosis, unspecified
Billable
B40.81
Blastomycotic meningoencephalitis
Billable
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