ICD-10-CM F91 is the diagnosis code for Conduct disorders. This code falls under the section "Behavioral and emotional disorders with onset usually occurring in childhood and adolescence" 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 should never be coded at the same time as F91. They are mutually exclusive:
The following conditions are not included in F91. If the patient has both, code each condition separately:
Understanding where F91 sits in the ICD-10-CM classification helps ensure proper coding:
No, F91 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
F91 is the ICD-10-CM diagnosis code for "Conduct disorders". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
F91 is located in Section F90-F98 â "Behavioral and emotional disorders with onset usually occurring in childhood and adolescence" within Chapter 5 of the ICD-10-CM Tabular List.
F91 has 6 sub-code(s) that provide more specific detail: F91.0, F91.1, F91.2, F91.3, F91.8 and more.
Use F91 when the patients documented diagnosis matches "Conduct disorders" 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 Conduct disorders is F91.
No, F91 is non-billable. Use a more specific sub-code for primary diagnosis billing.
F91 is in Chapter 5 of the ICD-10-CM Tabular List.
Type 1 Excludes for F91 include: antisocial behavior (Z72.81-); antisocial personality disorder (F60.2).
Yes, F91 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.