G31.0Frontotemporal dementia

G31.0 is the ICD-10-CM diagnosis code for frontotemporal dementia. It belongs to category G31 (other degenerative diseases of nervous system, not elsewhere classified), block G30-G32 (other degenerative diseases of the nervous system) and chapter 6 (diseases of the nervous system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within G31 (other degenerative diseases of nervous system, not elsewhere classified), G31.0 is specifically for frontotemporal dementia. Related codes cover senile degeneration of brain, not elsewhere classified (G31.1), degeneration of nervous system due to alcohol (G31.2), other specified degenerative diseases of nervous system (G31.8) and degenerative disease of nervous system, unspecified (G31.9).

To report this condition, pick the subcode that matches the documentation: G31.01 (disease) and G31.09 (disorder).

Use an additional code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify: dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4), dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-), dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3), dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2), dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0) and 1 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.