Non-Billable / Non-Specific Code
ICD-10-CM F51 is the diagnosis code for Sleep disorders not due to a substance or known physiological condition. This code falls under the section "Behavioral syndromes associated with physiological disturbances and physical factors" within Chapter 5 â Mental, Behavioral and Neurodevelopmental disorders (F01-F99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in F51. If the patient has both, code each condition separately:
Understanding where F51 sits in the ICD-10-CM classification helps ensure proper coding:
No, F51 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
F51 is the ICD-10-CM diagnosis code for "Sleep disorders not due to a substance or known physiological condition". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
F51 is located in Section F50-F59 â "Behavioral syndromes associated with physiological disturbances and physical factors" within Chapter 5 of the ICD-10-CM Tabular List.
F51 has 7 sub-code(s) that provide more specific detail: F51.0, F51.1, F51.3, F51.4, F51.5 and more.
Use F51 when the patients documented diagnosis matches "Sleep disorders not due to a substance or known physiological condition" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Sleep disorders not due to a substance or known physiological condition is F51.
No, F51 is non-billable. Use a more specific sub-code for primary diagnosis billing.
F51 is in Chapter 5 of the ICD-10-CM Tabular List.
Yes, F51 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.