ICD10
ICD-10 Code B40.8: Other forms of blastomycosis
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).
When is it used?
- May be used when a clinician documents other forms of blastomycosis in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
1Certain infectious and parasitic diseases (A00-B99)
block
B35-B49Mycoses
category
B40Blastomycosis
currentB40
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
Infectious Disease SpecialistGeneral Physician
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 406562008high
Blastomyces infection of central nervous system
Source: SNOMED International ICD-10 map
SNOMED_CT 187068005high
Blastomycosis liver
Source: SNOMED International ICD-10 map
SNOMED_CT 1193651003high
Blastomycotic enteritis of intestine
Source: SNOMED International ICD-10 map
SNOMED_CT 1193652005high
Blastomycotic enteritis of small intestine
Source: SNOMED International ICD-10 map
SNOMED_CT 197965008high
Blastomycotic prostatitis
Source: SNOMED International ICD-10 map
SNOMED_CT 191950004high
Infection by Blastomyces dermatitidis
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
B40.8
Replacement codes
B40.81 — Blastomycotic meningoencephalitisB40.89 — Other forms of blastomycosis
Common synonyms
Other forms of blastomycosis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.