ICD-10-CM > F01-F99 > F01-F09 > F03 > F03.C > F03.C1 F03.C1 Unspecified dementia, severe, with behavioral disturbance Non-Billable/Non-Specific Codes F03.C11Unspecified dementia, severe, with agitationF03.C18Unspecified dementia, severe, with other behavioral disturbance