Billable / Specific Code
ICD-10-CM F03.B18 is the diagnosis code for Unspecified dementia, moderate, with other behavioral disturbance. This code falls under the section "Mental disorders due to known physiological conditions" within Chapter 5 — Mental, Behavioral and Neurodevelopmental disorders (F01-F99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where F03.B18 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, F03.B18 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
F03.B18 is the ICD-10-CM diagnosis code for "Unspecified dementia, moderate, with other behavioral disturbance". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of F03.B18 is F03.B1 ("Unspecified dementia, moderate, with behavioral disturbance"). F03.B18 provides a more specific classification within this category.
F03.B18 is located in Section F01-F09 — "Mental disorders due to known physiological conditions" within Chapter 5 of the ICD-10-CM Tabular List.
Use F03.B18 when the patients documented diagnosis matches "Unspecified dementia, moderate, with other behavioral disturbance" 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 Unspecified dementia, moderate, with other behavioral disturbance is F03.B18.
Yes, F03.B18 can be used as a primary diagnosis code since it is billable and specific.
F03.B18 is in Chapter 5 of the ICD-10-CM Tabular List.
Yes, F03.B18 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.