S56.412Header code — not billable

Strain of extensor muscle, fascia and tendon of left index finger at forearm level

Short description: Strain of extensor musc/fasc/tend l idx fngr 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

S56Injury of muscle, fascia and tendon at forearm levelS56.0Injury of flexor musc/fasc/tend thumb at forearm levelS56.00Unsp injury of flexor musc/fasc/tend thumb at forearm levelS56.001Unsp injury of flexor musc/fasc/tend r thm at forarm lvS56.001AUnsp inj flexor musc/fasc/tend r thm at forarm lv, initYesS56.001DUnsp inj flexor musc/fasc/tend r thm at forarm lv, subsYesS56.001SUnsp inj flexor musc/fasc/tend r thm at forarm lv, sequelaYesS56.002Unsp injury of flexor musc/fasc/tend left thumb at forarm lvS56.002AUnsp inj flexor musc/fasc/tend l thm at forarm lv, initYesS56.002DUnsp inj flexor musc/fasc/tend l thm at forarm lv, subsYesS56.002SUnsp inj flexor musc/fasc/tend l thm at forarm lv, sequelaYesS56.009Unsp injury of flexor musc/fasc/tend thmb at forearm level

Frequently asked questions

What is ICD-10 code S56.412?

S56.412 is an ICD-10-CM diagnosis code for Strain of extensor muscle, fascia and tendon of left index finger at forearm level.

Is S56.412 a billable code?

No. S56.412 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 S56.412 in?

S56.412 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did S56.412 become effective?

S56.412 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to S56.412?

S56.412 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.