G31.01 Pick's disease

Billable ICD-10-CM code, FY2026.

Applicable to

• Primary progressive aphasia
• Progressive isolated aphasia

Applies from G31 Other degenerative diseases of nervous system, not elsewhere classified

Excludes2 (not included here)

• Reye's syndrome (G93.7)

Use additional code

• 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)
• mild neurocognitive disorder due to known physiological condition (F06.7-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 127 — Dementia, Mild or Unspecified
• RxHCC V08: HCC 112 — Dementia, Except Alzheimer's Disease
• ESRD V24: HCC 52

MS-DRG index

Defines the logic of DRG(s) 056-057 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 331.11 Pick's disease

Code annotations containing back-references to G31.01

Back-references to G31.01

• Code First: F02 Dementia in other diseases classified elsewhere ("Pick's disease (G31.01)")
• Type 1 Excludes: R47.01 Aphasia ("progressive isolated aphasia (G31.01)")

Back-references to G31.0

• Use Additional: G31 Other degenerative diseases of nervous system, not elsewhere classified ("code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:")

Diagnosis Index entries for G31.01

• Aphasia (amnestic) (global) (nominal) (semantic) (syntactic) › primary progressive
• Aphasia (amnestic) (global) (nominal) (semantic) (syntactic) › primary progressive › with behavioral disturbance
• Aphasia (amnestic) (global) (nominal) (semantic) (syntactic) › progressive isolated
• Aphasia (amnestic) (global) (nominal) (semantic) (syntactic) › progressive isolated › with behavioral disturbance
• Atrophy, atrophic (of) › brain (cortex) (progressive) › frontotemporal circumscribed
• Atrophy, atrophic (of) › brain (cortex) (progressive) › frontotemporal circumscribed › with behavioral disturbance
• Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › Pick's
• Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › Pick's › with behavioral disturbance
• Disease, diseased › Pick's
• Disease, diseased › Pick's › with behavioral disturbance
• Disease, diseased › Pick's › brain
• Disease, diseased › Pick's › brain › with behavioral disturbance
• Pick's › cerebral atrophy
• Pick's › cerebral atrophy › with behavioral disturbance
• Pick's › disease or syndrome (brain)
• Pick's › disease or syndrome (brain) › with behavioral disturbance
• Pick's › disease or syndrome (brain) › brain
• Pick's › disease or syndrome (brain) › brain › with behavioral disturbance
• Pick's › syndrome › brain
• Pick's › syndrome › brain › with behavioral disturbance

Nearby codes

• G31 Other degenerative diseases of nervous system, not elsewhere classified
• G31.0 Frontotemporal dementia
• G31.01 Pick's disease (this code)
• G31.09 Other frontotemporal neurocognitive disorder
• G31.1 Senile degeneration of brain, not elsewhere classified
• G31.2 Degeneration of nervous system due to alcohol
• G31.8 Other specified degenerative diseases of nervous system
• G31.80 Leukodystrophy, unspecified