ICD-10 Code S66.319D - Strain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter

ICD-10-CM Diagnosis Code S66.319D

Diagnosis Code: S66.319D (Raw: S66319D)

Description: Strain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent 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 S66.319D is designated for Strain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent 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.