S83.1
⚠ Non-billable (Header)Subluxation and dislocation of knee
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
directMay be coded together if both conditions coexist
- • instability of knee prosthesis (T84.022, T84.023)
⚠️ Excludes2
inherited from S83Rules from parent category S83: Dislocation and sprain of joints and ligaments of knee
- • 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.-)
Child Codes (6)
S83.10Unspecified subluxation and dislocation of kneeS83.11Anterior subluxation and dislocation of proximal end of tibiaS83.12Posterior subluxation and dislocation of proximal end of tibiaS83.13Medial subluxation and dislocation of proximal end of tibiaS83.14Lateral subluxation and dislocation of proximal end of tibiaS83.19Other subluxation and dislocation of knee
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CodeS83.1
BillableNo — Header code
ParentS83
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes10 rule(s)
Excludes28 note(s)
Child codes6
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)