S81.009S

Unspecified open wound, unspecified knee, sequela

Billable FY2026 2025-10-01 → 2026-09-30

This is the unspecified option. 2 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.

Exclusions 9 never code together

S81code

Excludes1

Excludes2

Excludes2

burns and corrosions (T20-T32)T20-T32
frostbite (T33-T34)T33-T34
injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)S90-S99
insect bite or sting, venomous (T63.4)T63.4

Excludes2

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3

A initial encounter

D subsequent encounter

S sequela this code

Instructional notes 4

S81code

Code also

Notes

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.

Use additional code

Index entries leading here 1

Alongside this code 2 same parent — S81.009

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.