G93.89 Other specified disorders of brain

The ICD-10-CM code for Other specified disorders of brain is G93.89 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

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

Section

G89-G99: Other disorders of the nervous system (G89-G99)

Category G93

24 codes (20 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G93.89:

• Automatism
• Ependymopathy
• Pneumocephalus
• Gliosis (cerebral)
• Cicatrix (adherent) (contracted) (painful) (vicious) › brain
• Calcification › choroid plexus
• Calcification › cerebral (cortex)
• Congestion, congestive › brain

Inclusion Terms

• Postradiation encephalopathy

U.S. Hospital Utilization

• An estimated 185,305 U.S. inpatient stays in 2023 included G93.89 among the documented diagnoses.
• 5,540 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.

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)