G30.9 Alzheimer's disease, unspecified

The ICD-10-CM code for Alzheimer's disease, unspecified is G30.9 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G30-G32: Other degenerative diseases of the nervous system (G30-G32)

Category G30

5 codes (4 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G30.9:

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

U.S. Hospital Utilization

• An estimated 281,400 U.S. inpatient stays in 2023 included G30.9 among the documented diagnoses.
• 21,090 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Prevalence & Statistics

• The number of people in the United States living with Alzheimer's disease is projected to double from 6.9 million in 2020 to nearly 14 million by 2060. (CDC (About Alzheimer's Disease), 2020)

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)
• CDC (About Alzheimer's Disease) (2020)