ICD-10-CM S81: Open wound of knee and lower leg

ICD-10-CM Diagnosis Code (2025)

Official Description for S81

Open wound of knee and lower leg

Coding Notes & Guidelines for S81

Excludes1: Not Coded Here
  • open fracture of knee and lower leg (S82.-)
  • traumatic amputation of lower leg (S88.-)
Excludes1: Not Coded Here

superficial bite of knee (S80.27-)

Excludes1: Not Coded Here

superficial bite of lower leg (S80.86-, S80.87-)

Excludes2: Not Included Here

open wound of ankle and foot (S91.-)

Inclusion Terms

Bite of knee NOS

Inclusion Terms

Bite of lower leg NOS

Code Also

any associated wound infection

7th Character Guidance

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

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for S81):

S81.0 - Open wound of knee S81.00 - Unspecified open wound of knee S81.001 - Unspecified open wound, right knee S81.002 - Unspecified open wound, left knee S81.009 - Unspecified open wound, unspecified knee S81.01 - Laceration without foreign body of 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 S81.02 - Laceration with foreign body of 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 S81.03 - Puncture wound without foreign body of 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 S81.04 - Puncture wound with foreign body of 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 S81.05 - Open bite of knee S81.051 - Open bite, right knee S81.052 - Open bite, left knee S81.059 - Open bite, unspecified knee S81.8 - Open wound of lower leg S81.80 - Unspecified open wound of lower leg S81.801 - Unspecified open wound, right lower leg S81.802 - Unspecified open wound, left lower leg S81.809 - Unspecified open wound, unspecified lower leg S81.81 - Laceration without foreign body of 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 S81.82 - Laceration with foreign body of 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 S81.83 - Puncture wound without foreign body of 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 S81.84 - Puncture wound with foreign body of 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 S81.85 - Open bite of lower leg S81.851 - Open bite, right lower leg S81.852 - Open bite, left lower leg S81.859 - Open bite, unspecified lower leg

About ICD-10-CM Code S81 (Open wound of knee and lower leg)

ICD-10-CM code S81 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM S81 became effective on October 1, 2024.

This page provides detailed information about S81 - Open wound of knee and lower leg. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Open wound of knee and lower leg.