Atrophy of salivary gland

This code signifies a reduction in the size and functional capacity of one or more salivary glands, resulting from a decrease in cell number or size. This atrophy can lead to xerostomia (dry mouth) and associated oral health issues.

Apply this code when documentation explicitly states atrophy of a salivary gland, such as the parotid, submandibular, or sublingual gland. This often occurs in the context of autoimmune diseases (e.g., Sjögren's syndrome), radiation therapy to the head and neck, or certain medications.

• Differentiate from salivary gland aplasia (congenital absence) or hypoplasia (underdevelopment).
• Always look for an underlying cause if documented, and code it as a primary diagnosis if appropriate, with salivary gland atrophy as a secondary diagnosis.
• Ensure documentation specifies "atrophy" rather than just "dry mouth" or "salivary gland dysfunction" without a confirmed anatomical change.