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

Instructional notes

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers 7th character use and coding of injuries, fractures, burns, drug and toxic effects, abuse and neglect, and complications of care (S00-T88).

• Application of 7th Characters in Chapter 19 (page 77)
• Coding of Injuries (page 78)
• Coding of Traumatic Fractures (page 79)
• Coding of Burns and Corrosions (page 80)
• Adverse Effects, Poisoning, Underdosing and Toxic Effects (page 82)
• Adult and child abuse, neglect and other maltreatment (page 85)
• Complications of care (page 85)

Read Section I.C.19 (page 77)

Codes under S80-S89

S80-S89 can't be used on a claim. Pick a billable code below; grey headings group them.

• S80Superficial injury of knee and lower leg
• S81Open wound of knee and lower leg
• S82Fracture of lower leg, including ankle
• S83Dislocation and sprain of joints and ligaments of knee
• S84Injury of nerves at lower leg level
• S85Injury of blood vessels at lower leg level
• S86Injury of muscle, fascia and tendon at lower leg level
• S87Crushing injury of lower leg
• S88Traumatic amputation of lower leg
• S89Other and unspecified injuries of lower leg

S80-S89 MS-DRGs

This code does not group to an MS-DRG as a principal diagnosis.

Other codes that refer to S80-S89

Notes on these codes point to S80-S89.

• M23 Excludes2: current injury - see injury of knee and lower leg (S80-S89)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.