ICD-10 Code B42.89 – Other forms of sporotrichosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B42.89 – Other forms of sporotrichosis
What it is
B42.89 identifies sporotrichosis infections that do not fit the more specific coded forms. Use it for documented Sporothrix infection involving other sites or presentations. Check documentation.
Clinical signs
Clinical features vary; refer to documentation. Sporotrichosis may present with nodules, ulceration, or lymphatic spread, but this code is reserved when the record describes another specified form.
When to use this code
Use B42.89 when the provider documents sporotrichosis and specifies an atypical or other form not captured by a more specific code. It may apply when the infection site or pattern is clearly stated but not separately indexed. If the note is vague, query the provider.
Do not use for
Do not use this code for unspecified sporotrichosis when the record lacks detail. Also avoid it if documentation supports a different fungal infection or a more specific sporotrichosis code.
Coding tip
Match the code to the exact documented form of sporotrichosis and verify that no more specific code applies.