S46.999Header code — not billable

Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified arm

Short description: Inj unsp muscle, fascia and tendon at shldr/up arm, unsp arm

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
S46
Effective date
October 1, 2026

Related codes in category S46

S46Injury of muscle, fascia and tendon at shldr/up armS46.0Injury of musc/tend the rotator cuff of shoulderS46.00Unsp injury of musc/tend the rotator cuff of shoulderS46.001Unsp injury of musc/tend the rotator cuff of right shoulderS46.001AUnsp inj musc/tend the rotator cuff of r shoulder, initYesS46.001DUnsp inj musc/tend the rotator cuff of r shoulder, subsYesS46.001SUnsp inj musc/tend the rotator cuff of r shoulder, sequelaYesS46.002Unsp injury of musc/tend the rotator cuff of left shoulderS46.002AUnsp inj musc/tend the rotator cuff of l shoulder, initYesS46.002DUnsp inj musc/tend the rotator cuff of l shoulder, subsYesS46.002SUnsp inj musc/tend the rotator cuff of l shoulder, sequelaYesS46.009Unsp injury of musc/tend the rotator cuff of unsp shoulder

Frequently asked questions

What is ICD-10 code S46.999?

S46.999 is an ICD-10-CM diagnosis code for Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified arm.

Is S46.999 a billable code?

No. S46.999 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 S46.999 in?

S46.999 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did S46.999 become effective?

S46.999 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to S46.999?

S46.999 belongs to category S46, 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.