Unspecified injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level
Short description: Unsp injury of extn/abdr musc/fasc/tend of thmb at forarm lv
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S56
- Effective date
- October 1, 2026
Related codes in category S56
Frequently asked questions
What is ICD-10 code S56.309?
S56.309 is an ICD-10-CM diagnosis code for Unspecified injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level.
Is S56.309 a billable code?
No. S56.309 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is S56.309 in?
S56.309 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S56.309 become effective?
S56.309 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S56.309?
S56.309 belongs to category S56, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.