ICD-10 Code G47.01 – Insomnia due to medical condition (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G47.01 – Insomnia due to medical condition
What it is
G47.01 identifies insomnia that is caused by an underlying medical condition. Use it when the sleep problem is secondary to a documented illness rather than a primary insomnia disorder.
Clinical signs
Patients typically report difficulty falling asleep, staying asleep, or waking too early, with resulting daytime impairment. Clinical features vary; refer to documentation and the linked medical condition.
When to use this code
Use this code when the record clearly states insomnia is due to a medical condition, such as a chronic disease or other documented disorder. Code the underlying condition as well when instructed by the chart and coding guidelines. Do not use it for nonspecific sleep complaints without a causal link.
Do not use for
Do not use for primary insomnia or insomnia caused by substances, medications, or mental disorders unless documentation supports this code. Check documentation if the cause is unclear.
Coding tip
Confirm that the provider links insomnia to a medical condition before assigning G47.01.