ICD-10 Code L02.21 – Cutaneous abscess of trunk (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.21 – Cutaneous abscess of trunk
What it is
This code identifies a localized collection of pus in the skin and soft tissue of the trunk. Use it when the abscess is on the chest, back, abdomen, or similar trunk area.
Clinical signs
Typical findings include a painful, swollen, red, and warm skin lesion that may drain pus. Clinical features vary; refer to documentation if the exact site or depth is unclear.
When to use this code
Use L02.21 when the provider documents a cutaneous abscess specifically on the trunk and does not assign a more precise site code. It fits simple skin abscesses of the trunk, including those described as localized or superficial. Check documentation if the lesion is deeper, postoperative, or part of a broader infection.
Do not use for
Do not use this code for abscesses on the head, neck, limb, or other non-trunk sites. Do not use it when documentation supports a deeper soft tissue infection or a different specific diagnosis.
Coding tip
Verify the exact anatomic location in the note before assigning L02.21.