Home / ICD-10-CM / Chapter 6: Diseases of the nervous system (G00-G99) / Other degenerative diseases of the nervous system (G30-G32)

G31.87: Primary progressive apraxia of speech

ICD-10-CM code G31.87

New code · FY2026

Billable: use this code on claims.

  • New code, effective October 1, 2025 (FY2026).

Code breakdown

G31.87

  1. G31CategoryOther degenerative diseases of nervous system, not elsewhere classified
  2. 8Character 4Other specified degenerative diseases of nervous system
  3. 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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All FY2026 ICD-10-CM changes

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.