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S81

Non-billable

Open wound of knee and lower leg

S81 is the ICD-10-CM code for Open wound of knee and lower leg. It is a non-billable category code — use a more specific child code such as S81.0 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Subcodes
2
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Excludes1 — not coded here

  • •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.-)

Notes

  • •any associated wound infection

Frequently asked questions

What is ICD-10 code S81?
S81 is the ICD-10-CM code for "Open wound of knee and lower leg". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is S81 a billable code?
No — S81 is a non-billable header code. Use a more specific child code (such as S81.0) for billing.
What are the subcodes of S81?
S81 has 2 more specific child codes, including S81.0, S81.8.
What is excluded from S81?
Excludes1 (not coded here): open fracture of knee and lower leg (S82.-); traumatic amputation of lower leg (S88.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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