ICD-10 Code S66.393A - Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter

ICD-10-CM Diagnosis Code S66.393A

Diagnosis Code: S66.393A (Raw: S66393A)

Description: Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, 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 S66.393A is designated for Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, 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.