Insomnia due to medical condition

This code signifies a sleep disorder characterized by difficulty initiating or maintaining sleep, or non-restorative sleep, that is directly attributable to an underlying physical medical condition. It indicates that the insomnia is a symptom or complication of another diagnosed illness, rather than a primary sleep disorder.

Apply this code when documentation clearly links the patient's insomnia to a specific medical condition, such as chronic pain, heart failure, hyperthyroidism, or respiratory disorders. The medical record should explicitly state the causal relationship between the medical condition and the sleep disturbance.

• Always code the underlying medical condition first, followed by this code to show the causal link.
• Ensure the physician's documentation explicitly states "insomnia due to [medical condition]" or similar phrasing.
• Do not use this code for primary insomnia (insomnia not caused by another condition) or insomnia due to mental disorders.