S81.002 Unspecified open wound, left kneeNon-billable ICD-10-CM code.
M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S71 Open wound of hip and thigh ("open wound of knee and lower leg (S81.-)")S84 Injury of nerves at lower leg level ("any associated open wound (S81.-)")S85 Injury of blood vessels at lower leg level ("any associated open wound (S81.-)")S86 Injury of muscle, fascia and tendon at lower leg level ("any associated open wound (S81.-)")S81.00 Unspecified open wound of kneeS81.001 Unspecified open wound, right kneeS81.001A Unspecified open wound, right knee, initial encounterS81.001D Unspecified open wound, right knee, subsequent encounterS81.001S Unspecified open wound, right knee, sequelaS81.002 Unspecified open wound, left knee (this code)S81.002A Unspecified open wound, left knee, initial encounterS81.002D Unspecified open wound, left knee, subsequent encounterS81.002S Unspecified open wound, left knee, sequelaS81.009 Unspecified open wound, unspecified kneeS81.009A Unspecified open wound, unspecified knee, initial encounter