ICD-10 Code R40.2421 - Glasgow coma scale score 9-12, in the field [EMT or ambulance]

ICD-10-CM Diagnosis Code R40.2421

Diagnosis Code: R40.2421 (Raw: R402421)

Description: Glasgow coma scale score 9-12, in the field [EMT or ambulance]

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 R40.2421 is designated for Glasgow coma scale score 9-12, in the field [EMT or ambulance]. 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.