New code · FY2026
Billable: use this code on claims.
- New code, effective October 1, 2025 (FY2026).
Code breakdown
G31.87
- G31CategoryOther degenerative diseases of nervous system, not elsewhere classified
- 8Character 4Other specified degenerative diseases of nervous system
- 7Character 5Primary progressive apraxia of speech
Coding notes
Excludes2 (from G31)
- Reye's syndrome (G93.7)
Use additional code (from G31)
- 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-)
Medicare coverage
G31.87 is listed as a covered diagnosis in 12 Medicare billing and coding articles:
- A53052 Billing and Coding: Home Health Speech-Language Pathology
- A54111 Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A56612 Billing and Coding: CT of the Head
- A56639 Billing and Coding: Hospice Alzheimer's Disease & Related Disorders
- A56641 Billing and Coding: Home Health Skilled Nursing Care-Teaching and Training: Alzheimer's Disease and Behavioral Disturbances
- A56775 Billing and Coding: Magnetic Resonance Angiography
- A56868 Billing and Coding: Outpatient Speech Language Pathology
- A57065 Billing and Coding: Outpatient Psychiatry and Psychology Services
- A57130 Billing and Coding: Psychiatric Codes
- A57204 Billing and Coding: MRI and CT Scans of the Head and Neck
…and 2 more. Check the coverage tool for your CPT code.
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ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.