ICD-10-CM Diagnosis Code R94.01
Diagnosis Code: R94.01 (Raw: R9401)
Description: Abnormal electroencephalogram [EEG]
Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)
Fiscal Year: 2026
CMS Section 111 Status: Valid for reporting.
Overview & Clinical Details
ICD-10-CM code R94.01 is designated for Abnormal electroencephalogram [EEG]. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.