October 9, 2025
Insomnia is one of the most common sleep disorders, affecting millions of people worldwide.
The ICD-10-CM diagnosis codes for insomnia help healthcare providers accurately document, diagnose, and bill for services related to sleep disturbances.
Insomnia refers to persistent difficulty falling asleep, staying asleep, or getting restorative sleep, even when adequate sleep opportunity exists.
It can result from stress, medical conditions, medications, or mental health disorders such as anxiety or depression.
Below are the official ICD-10-CM diagnosis codes used for insomnia and its related conditions:
|
ICD-10 Code |
Description |
|
F51.0 |
Insomnia not due to a substance or known physiological condition |
|
F51.01 |
Idiopathic insomnia (primary insomnia) |
|
F51.02 |
Adjustment insomnia (stress-related insomnia) |
|
F51.03 |
Paradoxical insomnia |
|
F51.04 |
Psychophysiologic insomnia |
|
F51.05 |
Insomnia due to other mental disorders |
|
G47.0 |
Insomnia, general category |
|
G47.00 |
Insomnia, unspecified |
|
G47.01 |
Insomnia due to a medical condition |
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Accurate ICD-10 coding for insomnia supports proper claim submission and helps establish medical necessity for diagnostic tests, therapy, or medication. Providers should ensure documentation specifies:
The correct ICD-10 diagnosis code for insomnia depends on the root cause and documentation. Whether itβs chronic, adjustment-related, or secondary to another disorder, precise coding ensures compliance and accurate reimbursement.
Need Help? Book a free 15-minute coding audit.
The general ICD-10 code for insomnia is G47.00 β Insomnia, unspecified.
Use F51.04, Psychophysiologic insomnia or F51.01 β Idiopathic insomnia, depending on the clinical documentation.
Use F51.05 β Insomnia due to other mental disorders when insomnia is linked to anxiety or fear.
When insomnia results from a physical or medical condition causing pain, code G47.01 β Insomnia due to medical condition applies.
Use G47.9 β Sleep disorder, unspecified for general or undiagnosed sleep issues
Yes, When insomnia is a symptom of another disorder (e.g., depression, chronic pain), itβs often listed as a secondary diagnosis.
Yes, ICD-10 codes such as F51.0βF51.05 and G47.00βG47.09 are billable and must align with clinical documentation for payer approval.
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