2027 ICD-10-CM Diagnosis Code S80Superficial injury of knee and lower leg

ICD-10-CM Codes›S00–T88›S80-S89›S80

ICD-10-CM S80
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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

ICD-10-CM Code
S80
Billable Status
No — Non-Billable Category
Code Describes
Superficial injury of knee and lower leg
Short Description
Superficial injury of knee and lower leg
Same as the full description in the CMS dataset.
Chapter
S80-S89
Injuries to the knee and lower leg

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS80-S89Injuries to the knee and lower leg
CategoryS80Superficial injury of knee and lower leg
This CodeS80Superficial injury of knee and lower leg

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 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to S80: its own notes plus those printed at block S80-S89 and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On S80 itself
  • superficial injury of ankle and foot (S90.-)
From Block S80-S89 Injuries to the knee and lower leg applies to 4,680 codes
  • 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)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category S80
Values for category S80 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

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

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S80Overview

What is the ICD-10 code for superficial injury of knee and lower leg?

S80 is the ICD-10-CM category for superficial injury of knee and lower leg, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.