ICD-10 Code A06.5 – Amebic lung abscess (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A06.5 – Amebic lung abscess
What it is
A06.5 identifies a lung abscess caused by Entamoeba histolytica infection. Use it when the record documents amebic involvement of the lung rather than a nonspecific pulmonary abscess.
Clinical signs
Clinical features vary; refer to documentation. Typical references describe cough, chest pain, fever, and imaging evidence of a cavitary lung lesion, often with concurrent or recent amebic disease elsewhere.
When to use this code
Use this code when the provider specifically links the lung abscess to amebiasis or Entamoeba histolytica. It is appropriate when pulmonary involvement is documented as amebic, including extension from another site or disseminated infection.
If the chart only says “lung abscess” without an infectious cause, check documentation before assigning A06.5. Code the confirmed diagnosis that best matches the provider’s statement.
Do not use for
Do not use A06.5 for ordinary bacterial lung abscesses, pneumonia, or unspecified pulmonary abscesses. If the amebic cause is not documented, check documentation.
Coding tip
Look for explicit wording such as “amebic,” “Entamoeba histolytica,” or “amoebic” in the provider note before selecting A06.5.