Fistula of salivary gland

This code represents an abnormal, permanent communication or tract that connects a salivary gland or its duct to another structure, typically the skin or an internal cavity. This can result in the leakage of saliva externally or internally, leading to symptoms such as persistent drainage, swelling, or infection.

Use this code when documentation clearly indicates the presence of a fistula originating from any salivary gland (parotid, submandibular, sublingual, or minor salivary glands). This diagnosis is often supported by clinical examination, imaging studies (e.g., sialography, CT, MRI), or surgical findings.

• Specify the exact salivary gland involved if known and if a more specific code exists within the ICD-9-CM hierarchy (though 527.4 is fairly specific for fistula).
• Consider an additional code for the underlying cause of the fistula, such as trauma, infection, or surgical complication, if documented.
• Distinguish from salivary gland cysts or obstructions without a fistulous tract.