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S81.85

Open bite of lower leg

Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 10 never code together
S81.85code
Excludes1
S81code
Excludes1
  • open fracture of knee and lower leg (S82.-)S82.-
  • traumatic amputation of lower leg (S88.-)S88.-
Excludes2
  • open wound of ankle and foot (S91.-)S91.-
S80-S89block
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
S00-T88chapter
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
Instructional notes 5
S81code
Code also
  • any associated wound infection
S81.85code
Inclusion terms
  • Bite of lower leg NOS
S00-T88chapter
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
  • code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Official Guidelines

No guideline section names this code or its chapter.

Index entries leading here 1
  • Bite (s) (animal) (human)
Alongside this code 5 same parent — S81.8
S81.80 Unspecified open wound of lower leg category S81.81 Laceration without foreign body of lower leg category S81.82 Laceration with foreign body of lower leg category S81.83 Puncture wound without foreign body of lower leg category S81.84 Puncture wound with foreign body of lower leg category
Subordinate codes 3
S81.851 Open bite, right lower leg S81.852 Open bite, left lower leg S81.859 Open bite, unspecified lower leg
Additional references
AHA Coding Clinic® Licence required

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

Risk adjustment

Maps to no condition category in any loaded model.

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

This code

Billable
no
Code set
FY2026
Parent
S81.8
Block
S80-S89
Siblings
5
Subordinate
3

Present FY2024–FY2027.