Human polyomavirus 9 infection
B33.8 – Other specified viral diseases
5714002 – Disease caused by Polyomavirus
- Cytomegalovirus infection – Timing of onset is typically 4-6 weeks posttransplant rather than years after transplant.
- Herpes zoster or herpes simplex virus reactivation – Characteristic painful lesions are distinct from the hyperkeratotic lesions observed in HPyV9 infection.
- Pneumocystis jirovecii infection – This diagnosis is established with bronchoalveolar lavage (BAL).
- Cutaneous lymphoproliferative disorders (eg, Epstein-Barr virus infection)
- Disseminated fungal infections (eg, Candida, cryptococcosis, histoplasmosis) – Diagnosis is established with urine culture or cerebrospinal fluid culture.
- Pruritic and dyskeratotic dermatosis
- Hypertrophic lichen planus
- Acquired perforating disease
- Eruptive keratoacanthomas
- Trichodysplasia spinulosa
- Lichenoid drug eruption
- Acrokeratosis paraneoplastica