Personal history of unspecified mental disorder

This code indicates that a patient has a documented history of a mental health condition, but the specific diagnosis of that past disorder is not known or was not recorded. It signifies a prior mental health issue without identifying its precise nature.

This code is appropriate when a patient's medical record clearly states a "history of mental disorder" without further specification. It can be used when a more specific historical diagnosis cannot be ascertained from available documentation, or when the specific disorder is not relevant to the current encounter.

• Only use this code when no more specific historical mental disorder diagnosis can be identified.
• Avoid using this code if the current encounter is for an active mental disorder; instead, code the active condition.
• Query the provider for a more specific diagnosis if possible, especially if the history impacts current care.