S81 Open wound of knee and lower leg

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Open wound of knee and lower leg is S81 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
S80-S89: Injuries to the knee and lower leg (S80-S89)
Category S81
51 codes (36 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with S81.
  • open fracture of knee and lower leg (S82.-)
  • traumatic amputation of lower leg (S88.-)
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • open wound of ankle and foot (S91.-)
Code Also
  • any associated wound infection

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference S81 with the canonical source and edition:

S81 — Open wound of knee and lower leg. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/S81

Canonical URL: https://icd10codingpro.com/codes/S81

Related Codes

More Specific Codes

S81.0 Open wound of knee S81.8 Open wound of lower leg

All Codes in S81

Every most-specific code under S81 Open wound of knee and lower leg (36 codes):

Show the complete S81 code list
S81.001 Unspecified open wound, right knee S81.002 Unspecified open wound, left knee S81.009 Unspecified open wound, unspecified knee S81.011 Laceration without foreign body, right knee S81.012 Laceration without foreign body, left knee S81.019 Laceration without foreign body, unspecified knee S81.021 Laceration with foreign body, right knee S81.022 Laceration with foreign body, left knee S81.029 Laceration with foreign body, unspecified knee S81.031 Puncture wound without foreign body, right knee S81.032 Puncture wound without foreign body, left knee S81.039 Puncture wound without foreign body, unspecified knee S81.041 Puncture wound with foreign body, right knee S81.042 Puncture wound with foreign body, left knee S81.049 Puncture wound with foreign body, unspecified knee S81.051 Open bite, right knee S81.052 Open bite, left knee S81.059 Open bite, unspecified knee S81.801 Unspecified open wound, right lower leg S81.802 Unspecified open wound, left lower leg S81.809 Unspecified open wound, unspecified lower leg S81.811 Laceration without foreign body, right lower leg S81.812 Laceration without foreign body, left lower leg S81.819 Laceration without foreign body, unspecified lower leg S81.821 Laceration with foreign body, right lower leg S81.822 Laceration with foreign body, left lower leg S81.829 Laceration with foreign body, unspecified lower leg S81.831 Puncture wound without foreign body, right lower leg S81.832 Puncture wound without foreign body, left lower leg S81.839 Puncture wound without foreign body, unspecified lower leg S81.841 Puncture wound with foreign body, right lower leg S81.842 Puncture wound with foreign body, left lower leg S81.849 Puncture wound with foreign body, unspecified lower leg S81.851 Open bite, right lower leg S81.852 Open bite, left lower leg S81.859 Open bite, unspecified lower leg
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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