Injuries to the knee and lower leg (S80-S89) ICD-10-CM
The S80–S89 section covers injuries to the knee and lower leg with 5,585 ICD-10-CM diagnosis codes, of which 4,680 are billable in fiscal year 2027. The section is organized into the 10 code ranges listed below.
Type 2 Excludes
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.
Code Ranges in This Section 10 ranges · 5,585 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the S80–S89 Code Range
These injuries affect the knee and lower leg; the fracture category also includes the ankle. They include wounds, fractures, joint injuries, damage to nerves or blood vessels, crushing injuries, and traumatic amputations.
The categories separate injuries by type. S80 distinguishes bruises from other surface injuries, while S81 separates open wounds by knee or lower-leg site. S82 sorts fractures by bone and location. S83 separates knee dislocations, tears, and sprains by the affected part. S84 and S85 distinguish the injured nerve or blood vessel. S86 identifies the injured muscle or tendon group; S87 and S88 distinguish crushing injuries and traumatic amputations by level. S89 includes growth-plate fractures and other lower-leg injuries.
Where listed, the seventh character distinguishes initial encounters, subsequent encounters, and lasting effects. For fractures, it can also distinguish closed from open fractures, open fracture type, and healing status.
Questions About This Page
How many codes are in the S80-S89 range?
The S80-S89 range contains 5,585 ICD-10-CM diagnosis codes in FY 2027. 4,680 of them are billable, and the rest are category headers that organize the section.
What conditions does S80-S89 cover?
The range covers injuries to the knee and lower leg. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
