S83.429ABillable
Sprain of lateral collateral ligament of unspecified knee, initial encounter
Short description: Sprain of lateral collateral ligament of unsp knee, init
- 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 S83.429A?
S83.429A is an ICD-10-CM diagnosis code for Sprain of lateral collateral ligament of unspecified knee, initial encounter.
Is S83.429A a billable code?
Yes. S83.429A is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is S83.429A in?
S83.429A falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S83.429A become effective?
S83.429A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S83.429A?
S83.429A 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.