F51.9
BillableSleep disorder not due to a substance or known physiological condition, unspecified
F51.9 is the ICD-10-CM code for Sleep disorder not due to a substance or known physiological condition, unspecified. It is a billable, specific code valid for reimbursement.
F01-F99 Mental, Behavioral and Neurodevelopmental disorders
What this means — in plain language
MedlinePlus · NIHWhat is sleep? While you are sleeping your brain and body functions are still active. Sleep is a natural process that helps your body restore energy, supports learning and memory, and keeps you healthy. It's not just the number of hours of sleep you get that matters. The quality of your sleep is also important. During the night, your brain cycles through different stages of non-rapid eye movement (non-REM) sleep and…
Read more about Sleep Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Emotional sleep disorder NOS
Frequently asked questions
- What is ICD-10 code F51.9?
- F51.9 is the ICD-10-CM code for "Sleep disorder not due to a substance or known physiological condition, unspecified". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
- Is F51.9 a billable code?
- Yes — F51.9 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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