ICD-10 Code B34.3 – Parvovirus infection, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B34.3 – Parvovirus infection, unspecified
What it is
B34.3 identifies a parvovirus infection when the provider does not document a specific manifestation or type. Use it for an unspecified viral infection caused by parvovirus.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings may include nonspecific viral illness, rash, or joint symptoms, but the record should support the diagnosis.
When to use this code
Use B34.3 when the clinician documents parvovirus infection without naming a more specific condition. It also fits cases where the chart confirms parvovirus but does not describe complications or a related syndrome.
If the record only says “viral infection” or provides uncertain testing, check documentation before coding B34.3. Assign a more specific code if the provider documents a defined parvovirus-related diagnosis.
Do not use for
Do not use this code for parvovirus-associated conditions that are separately documented, such as a specific complication or syndrome. Do not code it when parvovirus is only suspected; check documentation.
Coding tip
Code B34.3 only when the provider clearly documents parvovirus infection and no more specific diagnosis is available.