S56.391 — Inj extn/abdr musc/fasc/tend of right thumb at forearm level

S56.391 is the ICD-10-CM 2025 code for Inj extn/abdr musc/fasc/tend of right thumb at forearm level. Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.

S56.391 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under S56.391. Browse the sub-codes listed on this page.

S56.391 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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