S81.00 Unspecified open wound of knee

Non-billable header with 3 child codes.

Applies from S81 Open wound of knee and lower leg

Excludes1 (never code together)

• open fracture of knee and lower leg (S82.-)
• traumatic amputation of lower leg (S88.-)

Excludes2 (not included here)

• open wound of ankle and foot (S91.-)

Code also

• any associated wound infection

7th character note

• The appropriate 7th character is to be added to each code from category S81

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Codes under S81.00

• S81.001 Unspecified open wound, right knee
• S81.002 Unspecified open wound, left knee
• S81.009 Unspecified open wound, unspecified knee

Code annotations containing back-references to S81.00

Back-references to S81

• Type 2 Excludes: M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")
• Type 2 Excludes: S71 Open wound of hip and thigh ("open wound of knee and lower leg (S81.-)")
• Code Also: S84 Injury of nerves at lower leg level ("any associated open wound (S81.-)")
• Code Also: S85 Injury of blood vessels at lower leg level ("any associated open wound (S81.-)")
• Code Also: S86 Injury of muscle, fascia and tendon at lower leg level ("any associated open wound (S81.-)")

Diagnosis Index entries for S81.00

• Wound, open › knee

Nearby codes

• S81 Open wound of knee and lower leg
• S81.0 Open wound of knee
• S81.00 Unspecified open wound of knee (this code)
• S81.001 Unspecified open wound, right knee
• S81.001A Unspecified open wound, right knee, initial encounter
• S81.001D Unspecified open wound, right knee, subsequent encounter
• S81.001S Unspecified open wound, right knee, sequela
• S81.002 Unspecified open wound, left knee