ICD-10-CM Codes
S00-T88 Injury, poisoning and certain other consequences of external causes
S80-S89 Injuries to the knee and lower leg
S81- Open wound of knee and lower leg
2021 ICD-10-CM Diagnosis Code S81.00

2021 ICD-10-CM Diagnosis Code S81.00

Unspecified open wound of knee

2016

2017

2018

2019

2020

2021

Non-Billable/Non-Specific Code

S81.00 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2021 edition of ICD-10-CM S81.00 became effective on October 1, 2020.
This is the American ICD-10-CM version of S81.00 - other international versions of ICD-10 S81.00 may differ.

The following code(s) above S81.00 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to S81.00:

S00-T88
2021 ICD-10-CM Range S00-T88
Injury, poisoning and certain other consequences of external causes
Note
- 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
Type 1 Excludes
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
Use Additional
- code to identify any retained foreign body, if applicable (Z18.-)
Injury, poisoning and certain other consequences of external causes
S80-S89
2021 ICD-10-CM Range S80-S89
Injuries to the knee and lower leg
Type 2 Excludes
- 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)
Injuries to the knee and lower leg
S81
ICD-10-CM Diagnosis Code S81
Open wound of knee and lower leg
Code Also
- any associated wound infection
Type 1 Excludes
- open fracture of knee and lower leg (S82.-)
- traumatic amputation of lower leg (S88.-)
Type 2 Excludes
- open wound of ankle and foot (S91.-)
Open wound of knee and lower leg

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to S81.00:

Wound, open T14.8-
ICD-10-CM Diagnosis Code T14.8-
Other injury of unspecified body region
Applicable To
Abrasion NOS
Contusion NOS
Crush injury NOS
Fracture NOS
Skin injury NOS
Vascular injury NOS
Wound NOS
- knee S81.00-

ICD-10-CM Codes Adjacent To S81.00

S80.922 Unspecified superficial injury of left lower leg

S80.922A …… initial encounter

S80.922D …… subsequent encounter

S80.922S …… sequela

S80.929 Unspecified superficial injury of unspecified lower leg

S80.929A …… initial encounter

S80.929D …… subsequent encounter

S80.929S …… sequela

S81 Open wound of knee and lower leg

S81.0 Open wound of knee

S81.00 Unspecified open wound of knee

S81.001 Unspecified open wound, right knee

S81.001A …… initial encounter

S81.001D …… subsequent encounter

S81.001S …… sequela

S81.002 Unspecified open wound, left knee

S81.002A …… initial encounter

S81.002D …… subsequent encounter

S81.002S …… sequela

S81.009 Unspecified open wound, unspecified knee

S81.009A …… initial encounter

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code S81.00

Unspecified open wound of knee

Injury, poisoning and certain other consequences of external causes

Injuries to the knee and lower leg

Open wound of knee and lower leg

Other injury of unspecified body region