All ICD10 Codes

S99

Non-Billable
ChapterS00–T88
Rankcategory
Official Description

Other and unspecified injuries of ankle and foot

Use a more specific code (0 billable, 5 non-billable)
S99.0Physeal fracture of calcaneushas subcodesS99.1Physeal fracture of metatarsalhas subcodesS99.2Physeal fracture of phalanx of toehas subcodesS99.8Other specified injuries of ankle and foothas subcodesS99.9Unspecified injury of ankle and foothas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

CH19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)

S90-S99 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • burns and corrosions (T20-T32)
  • fracture of ankle and malleolus (S82.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
S90-S99Injuries to the ankle and foot (S90-S99)
S99Other and unspecified injuries of ankle and footNot billable
S99.0Physeal fracture of calcaneusSubcodes
S99.1Physeal fracture of metatarsalSubcodes
S99.2Physeal fracture of phalanx of toeSubcodes
S99.8Other specified injuries of ankle and footSubcodes
S99.9Unspecified injury of ankle and footSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to S99:

blockS90-S99
Injuries to the ankle and foot (S90-S99)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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