ICD-10-CM Diagnosis Code S21.002A
Diagnosis Code: S21.002A (Raw: S21002A)
Description: Unspecified open wound of left breast, initial encounter
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 S21.002A is designated for Unspecified open wound of left breast, initial encounter. 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.