S83.429Header code — not billable
Sprain of lateral collateral ligament of unspecified knee
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S83
- Effective date
- October 1, 2026
Related codes in category S83
S83Dislocation and sprain of joints and ligaments of kneeS83.0Subluxation and dislocation of patellaS83.00Unspecified subluxation and dislocation of patellaS83.001Unspecified subluxation of right patellaS83.001AUnspecified subluxation of right patella, initial encounterYesS83.001DUnspecified subluxation of right patella, subs encntrYesS83.001SUnspecified subluxation of right patella, sequelaYesS83.002Unspecified subluxation of left patellaS83.002AUnspecified subluxation of left patella, initial encounterYesS83.002DUnspecified subluxation of left patella, subs encntrYesS83.002SUnspecified subluxation of left patella, sequelaYesS83.003Unspecified subluxation of unspecified patella
Frequently asked questions
What is ICD-10 code S83.429?
S83.429 is an ICD-10-CM diagnosis code for Sprain of lateral collateral ligament of unspecified knee.
Is S83.429 a billable code?
No. S83.429 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 S83.429 in?
S83.429 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S83.429 become effective?
S83.429 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S83.429?
S83.429 belongs to category S83, 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.