ICD-10 Code S83.409D - Sprain of unspecified collateral ligament of unspecified knee, subsequent encounter

ICD-10-CM Diagnosis Code S83.409D

Diagnosis Code: S83.409D (Raw: S83409D)

Description: Sprain of unspecified collateral ligament of unspecified knee, 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 S83.409D is designated for Sprain of unspecified collateral ligament of unspecified knee, 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.