S81

Non-Billable

ChapterS00–T88

Rankcategory

Official Description

Open wound of knee and lower leg

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

CH19 Parent Instructions

Excludes2(Not included here)

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Use Additional Code

code to identify any retained foreign body, if applicable (Z18.-)

S80-S89 Parent Instructions

Excludes2(Not included here)

burns and corrosions (T20-T32)
frostbite (T33-T34)
injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
insect bite or sting, venomous (T63.4)

Instructional Notes

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.-)

Code Also

any associated wound infection

Clinical Hierarchy

CH19Injury, poisoning and certain other consequences of external causes (S00-T88)

S80-S89Injuries to the knee and lower leg (S80-S89)

S81Open wound of knee and lower leg

S81.0Open wound of knee

S81.8Open wound of lower leg

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to S81:

blockS80-S89

Injuries to the knee and lower leg (S80-S89)

View context instructions

chapterCH19

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

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to S81. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

24 raw paths

Bite (s) (animal) (human)2 unique routes

knee→S81

leg (lower)→S81

Laceration8 unique routes

knee→S81(2 variants)

with foreign body→S81

leg (lower)→S81(6 variants)

left→S81(2 variants)

with foreign body→S81

right→S81(2 variants)

with foreign body→S81