ICD-10 Code B17.0 – Acute delta-(super) infection of hepatitis B carrier (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B17.0 – Acute delta-(super) infection of hepatitis B carrier
What it is
B17.0 identifies an acute hepatitis D infection occurring in a person who is already a hepatitis B carrier. Use it when documentation shows delta hepatitis superinfection on chronic hepatitis B carriage.
Clinical signs
Clinical features vary; refer to documentation. Typical notes may include acute hepatitis with jaundice, malaise, abdominal discomfort, or elevated liver enzymes in a known hepatitis B carrier.
When to use this code
Use B17.0 when the provider documents acute delta infection, delta superinfection, or hepatitis D infection in a hepatitis B carrier. It applies when the record clearly links the acute hepatitis D episode to carrier status.
Code this from physician documentation, not from serology alone. If the chart only states hepatitis B carrier or acute viral hepatitis without delta superinfection, check documentation before assigning B17.0.
Do not use for
Do not use B17.0 for hepatitis B carrier status without acute delta infection. It is also incorrect when the record does not specify hepatitis D or superinfection.
Coding tip
Confirm both elements in the note: acute delta infection and hepatitis B carrier status.