ICD-10-CM 2027
ICD-10 code for progressive isolated aphasia
From the official ICD-10-CM alphabetic index entry “Aphasia (amnestic) (global) (nominal) (semantic) (syntactic) › progressive isolated”. Page updated September 29, 2026.
About coding progressive isolated aphasia
The ICD-10-CM code for progressive isolated aphasia is G31.01 (Pick's disease). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on G31.01.
Within G31.0 (frontotemporal dementia), G31.01 is specifically for Pick's disease. Related codes cover other frontotemporal neurocognitive disorder (G31.09).
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 is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific progressive isolated aphasia codes (official index)
- with behavioral disturbance G31.01 — Pick's disease
Common questions about progressive isolated aphasia ICD-10 codes
What is the ICD-10 code for progressive isolated aphasia?
- G31.01 — Pick's disease. More specific codes apply when the documentation supports them: G31.01.
Is G31.01 billable?
- Yes. G31.01 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G31.01 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G31.01 as a principal diagnosis.
Is G31.01 a CC or MCC?
- No. G31.01 is neither a CC nor an MCC under MS-DRG v44.0.