ICD-10 Code S56.312S - Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, sequela

ICD-10-CM Diagnosis Code S56.312S

Diagnosis Code: S56.312S (Raw: S56312S)

Description: Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, 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 S56.312S is designated for Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, 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.