2026 ICD-10-CM Diagnosis Code S80Superficial injury of knee and lower leg
S80 is a non-billable ICD-10-CM category code for superficial injury of knee and lower leg, so it cannot be submitted on claims. Use a more specific code from this category instead, such as S80.00XA, S80.00XD, S80.00XS, and S80.01XA.
Code Identity
Code Classification
Specific Coding for Superficial injury of knee and lower legOverview
Non-specific codes like S80 require more characters. Use one of these billable codes instead:
S80.0 for Contusion of knee
S80.00 for Contusion of unspecified knee
S80.01 for Contusion of right knee
S80.02 for Contusion of left knee
S80.1 for Contusion of lower leg
S80.10 for Contusion of unspecified lower leg
S80.11 for Contusion of right lower leg
S80.12 for Contusion of left lower leg
S80.2 for Other superficial injuries of knee
S80.21 for Abrasion of knee
S80.22 for Blister (nonthermal) of knee
S80.24 for External constriction of knee
S80.25 for Superficial foreign body of knee
S80.26 for Insect bite (nonvenomous) of knee
S80.27 for Other superficial bite of knee
S80.8 for Other superficial injuries of lower leg
S80.81 for Abrasion of lower leg
S80.82 for Blister (nonthermal) of lower leg
S80.84 for External constriction of lower leg
S80.85 for Superficial foreign body of lower leg
S80.86 for Insect bite (nonvenomous) of lower leg
S80.87 for Other superficial bite of lower leg
S80.9 for Unspecified superficial injury of knee and lower leg
S80.91 for Unspecified superficial injury of knee
S80.92 for Unspecified superficial injury of lower leg
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Superficial injury of knee and lower leg (S80). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 2 Excludes
- superficial injury of ankle and foot S90
7th Character Note
- The appropriate 7th character is to be added to each code from category S80
7th Character
- A - initial encounter
- D - subsequent encounter
- S - sequela
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
Indicates that a seventh character is to be assigned to codes in a subcategory.
Patient EducationClinical
Wounds and Injuries
An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About S80Overview
Is S80 (Superficial injury of knee and lower leg) a billable code?
No. This is a category header that groups the codes for superficial injury of knee and lower leg, and headers cannot be submitted on claims. Claims for superficial injury of knee and lower leg need a more specific code from this category, such as S80.00XA, S80.00XD, and S80.00XS.
