ICD-10 Code C46.52 – Kaposi’s Sarcoma of Left Lung (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C46.52 – Kaposi’s sarcoma of left lung
What it is
This code identifies Kaposi’s sarcoma involving the left lung. It is used when documentation specifies malignant Kaposi lesions in that lung site.
Clinical signs
Clinical features vary; refer to documentation. Lung involvement may be noted on imaging, bronchoscopy, or pathology, often with respiratory symptoms or known Kaposi’s sarcoma elsewhere.
When to use this code
Use C46.52 when the provider documents Kaposi’s sarcoma in the left lung, including confirmed primary or secondary involvement of that site. Code only when the laterality and organ location are clearly stated. If the record says “lung” without left-side detail, check documentation.
Do not use for
Do not use this code for Kaposi’s sarcoma in the right lung, unspecified lung, or nonpulmonary Kaposi lesions. Do not assign it when the note only suggests possible lung disease without clear documentation.
Coding tip
Verify both the diagnosis and laterality in the source note before coding.