S83.421D — Sprain of lateral collateral ligament of right knee, subs

S83.421D is the ICD-10-CM 2025 code for Sprain of lateral collateral ligament of right knee, subs. Sprain of lateral collateral ligament of right knee, subsequent encounter. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.

Yes, S83.421D is a billable / specific ICD-10-CM code, meaning it can be used by clinicians and hospitals as a primary or secondary diagnosis on claims and electronic health records.

S83.421D belongs to the chapter "Injury, poisoning and certain other consequences of external causes" (codes S00-T88). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.

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