ICD-10 Code A19.0 – Acute miliary tuberculosis of a single specified site (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A19.0 – Acute miliary tuberculosis of a single specified site
What it is
This code identifies acute miliary tuberculosis affecting one specified site. Use it when documentation states disseminated TB with a single named organ or location involved.
Clinical signs
Clinical features vary; refer to documentation. Commonly, TB may present with systemic illness and findings related to the specified site, but the record should clearly identify the acute miliary form.
When to use this code
Use A19.0 when the provider documents acute miliary tuberculosis and names one site, such as a specific organ or anatomic location. The site must be documented clearly in the chart. If the record only says miliary TB without a single specified site, check documentation.
Do not use for
Do not use this code for pulmonary TB without miliary dissemination or for TB at multiple sites. If the note does not specify the single involved site, do not assume A19.0.
Coding tip
Verify both the acute miliary wording and the named site before assigning A19.0.