ICD-10 Code B78.1 – Cutaneous strongyloidiasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B78.1 – Cutaneous strongyloidiasis
What it is
B78.1 identifies cutaneous strongyloidiasis, a skin infection caused by Strongyloides larvae migrating in the skin. Use it when the record documents skin involvement from this parasitic infestation.
Clinical signs
Typical findings include serpiginous, itchy, migrating skin lesions, often described as larva currens. Clinical features vary; refer to documentation.
When to use this code
Use B78.1 when the provider documents cutaneous strongyloidiasis, Strongyloides skin infestation, or a skin manifestation attributed to this parasite. It may be supported by exam findings, history, or confirmed diagnosis in the chart. Code the condition only when the skin involvement is clearly documented.
Do not use for
Do not use this code for intestinal strongyloidiasis without skin involvement. Do not assign it when documentation is nonspecific or another parasitic skin disorder is identified; check documentation.
Coding tip
Look for explicit mention of cutaneous involvement, since strongyloidiasis may be documented in other forms.