Dry mouth, unspecified

This code represents xerostomia, a subjective sensation of oral dryness resulting from decreased salivary flow, when the underlying cause is not specified or known. It indicates a patient's complaint of dry mouth without further diagnostic clarification of its etiology.

Use this code when documentation indicates a patient's complaint of dry mouth, and the provider has not identified a specific cause such as dehydration, Sjögren syndrome, or salivary gland hyposecretion. This code is appropriate for initial encounters where the cause is still under investigation or when the dry mouth is idiopathic.

• Do not use this code if the documentation specifies dry mouth due to dehydration (E86.0) or Sjögren syndrome (M35.0-).
• Distinguish from salivary gland hyposecretion (K11.7), which refers to a measurable decrease in salivary flow, not just the subjective sensation.
• Always seek further specificity from the provider if a potential underlying cause is mentioned but not fully diagnosed.