ICD-10 S83
Non-Billable HeaderDislocation and sprain of joints and ligaments of knee
About ICD-10-CM S83
ICD-10-CM code S83 represents Dislocation and sprain of joints and ligaments of knee. This is a non-billable header code in the Injury, Poisoning, and External Causes chapter (block S83). The 2026 edition of ICD-10-CM S83 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Coding Tips for S83
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
Injury codes require a 7th character: A (initial encounter, active treatment), D (subsequent, healing/recovery), S (sequela, late effect of original injury). Codes with fewer than 6 characters need the placeholder X to bring them to 6 characters before adding the 7th. Wrong or missing 7th character is the #1 cause of injury claim denials.
Type 2 Excludes
Not included here, the excluded code is not part of S83, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- derangement of patella (M22.0-M22.3)
- injury of patellar ligament (tendon) (S76.1-)
- internal derangement of knee (M23.-)
- old dislocation of knee (M24.36)
- pathological dislocation of knee (M24.36)
- recurrent dislocation of knee (M22.0)
- strain of muscle, fascia and tendon of lower leg (S86.-)
Includes
- avulsion of joint or ligament of knee
- laceration of cartilage, joint or ligament of knee
- sprain of cartilage, joint or ligament of knee
- traumatic hemarthrosis of joint or ligament of knee
- traumatic rupture of joint or ligament of knee
- traumatic subluxation of joint or ligament of knee
- traumatic tear of joint or ligament of knee
Coding Notes
Code Also
- any associated open wound
Seven Chr Note
- The appropriate 7th character is to be added to each code from category S83
Medicare LCD Coverage for S83
Local Coverage Determinations (LCDs) from CMS MACs that list S83 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing S83.
1 Aetna
CPT Codes Commonly Billed with S83
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To S83
Other codes in section S80-S89 (Injuries to the knee and lower leg).
ICD-10 S83, Billing FAQ
Is ICD-10 code S83 billable? +
No, S83 is a non-billable header code. Use a more specific child code from block S83 when submitting claims.
What codes are Type 2 Excludes for S83? +
Type 2 Excludes (may be coded together when both conditions exist): derangement of patella (M22.0-M22.3); injury of patellar ligament (tendon) (S76.1-); internal derangement of knee (M23.-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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