ICD-10 Code K11.0 – Atrophy of salivary gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K11.0 – Atrophy of salivary gland
What it is
K11.0 identifies atrophy, or wasting away, of a salivary gland. It means the gland has decreased in size or function, often with reduced saliva production.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include dry mouth, reduced salivary flow, or gland shrinkage noted on exam or imaging.
When to use this code
Use K11.0 when the provider documents salivary gland atrophy as the diagnosis. It fits cases where the gland is described as involuted, shrunken, or otherwise diminished in tissue mass. Code the documented condition, not nonspecific dry mouth alone, unless atrophy is stated.
Do not use for
Do not use this code for general xerostomia without documented gland atrophy. Check documentation if the record only mentions inflammation, obstruction, infection, or another salivary gland disorder.
Coding tip
Confirm that “atrophy” is explicitly documented; if not, use the most specific stated salivary gland diagnosis.