Unspecified transient mental disorder in conditions classified elsewhere

This code represents a temporary mental disturbance that is not otherwise specified and arises as a symptom or complication of another underlying medical condition. It signifies a transient psychological or behavioral change that is secondary to a physical illness, injury, or substance use, rather than a primary psychiatric disorder.

Use this code when documentation indicates a temporary, non-specific mental disturbance directly attributable to another medical condition, and a more specific psychiatric diagnosis cannot be made. This code is appropriate when the mental symptoms are expected to resolve once the underlying condition is treated or resolves. Documentation should clearly link the mental symptoms to the primary medical diagnosis.

• Always sequence the underlying medical condition first, as this code represents a manifestation of that condition.
• Avoid using this code if a more specific transient mental disorder (e.g., delirium due to a general medical condition) can be identified.
• Ensure documentation explicitly states the transient nature of the mental disturbance and its association with a co-occurring medical condition.