MCMedicalCodingSoftware
G30.0

G30.0: Alzheimer's disease with early onset

Billable / specific codeICD-10-CM

G30.0 is a billable, specific ICD-10-CM code for alzheimer's disease with early onset. It is valid for submission on a claim.

Check G30.0 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above G30.0

A category’s note binds every code beneath it.

Written on G30: Alzheimer's disease

  • senile degeneration of brain NEC (G31.1)
  • senile dementia NOS (F03.-)
  • senility NOS (R41.81)

Other codes that can never be billed with G30.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • G31.1Senile degeneration of brain, not elsewhere classified

Risk adjustment

G30.0 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 127 Dementia, Mild or Unspecified0.341 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

G30.0 is named in 22 Medicare coverage policies: 20 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which one applies depends on your Medicare contractor.

  • A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
  • A56562Billing and Coding: Health and Behavior Assessment/Interventionnot covered
  • A53052Billing and Coding: Home Health Speech-Language Pathology
  • A53057Billing and Coding: Home Health Occupational Therapy

Alphabetic index entries that lead here

  • Disease, diseased›Alzheimer's›early onset
  • Disease, diseased›Alzheimer's›early onset›with behavioral disturbance

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under G30

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.