ICD-10 Code S66.912S - Strain of unspecified muscle, fascia and tendon at wrist and hand level, left hand, sequela

ICD-10-CM Diagnosis Code S66.912S

Diagnosis Code: S66.912S (Raw: S66912S)

Description: Strain of unspecified muscle, fascia and tendon at wrist and hand level, left hand, sequela

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 S66.912S is designated for Strain of unspecified muscle, fascia and tendon at wrist and hand level, left hand, sequela. 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.