ICD-10 Code K11.6 – Mucocele of salivary gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K11.6 – Mucocele of salivary gland
What it is
K11.6 identifies a mucocele of a salivary gland, a mucus-filled swelling caused by blockage or leakage from a salivary duct. It is usually a benign cyst-like lesion in the mouth or lip area.
Clinical signs
Typical findings include a soft, fluctuant, sometimes bluish oral swelling that may wax and wane. Clinical features vary; refer to documentation if the lesion site, cause, or appearance is not clearly described.
When to use this code
Use K11.6 when the provider documents a mucocele of a salivary gland or salivary duct without a more specific diagnosis. It fits cases described as mucus retention or extravasation in the oral cavity. Code from the documented site and type only if the record supports it.
Do not use for
Do not use this code for nonspecific mouth ulcers, salivary gland infection, or other oral cysts unless the record clearly states mucocele. Check documentation when the lesion is traumatic, neoplastic, or otherwise better explained by another diagnosis.
Coding tip
Query for the exact salivary site and whether the lesion is a mucocele before assigning K11.6.