S99.8 – Other specified injuries of ankle and foot
ICD-10-CM 2027 diagnosis code · Injuries to the ankle and foot
- Code
S99.8(claims format:S998)- Description
- Other specified injuries of ankle and foot
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
- Block
- S90-S99 Injuries to the ankle and foot
- Parent codes
- S99
Billable codes under S99.8
S99.8 is a header code and cannot be used on claims. Choose the most specific code:
- S99.81 – Other specified injuries of ankleHeader (more codes below)
- S99.82 – Other specified injuries of footHeader (more codes below)
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
A | initial encounter |
D | subsequent encounter |
S | sequela |
Notes for S99.8
- The appropriate 7th character is to be added to each code from subcategory S99.8
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block S90-S99
Related codes in S99
Frequently asked questions
What is ICD-10 code S99.8?
S99.8 is the ICD-10-CM code for other specified injuries of ankle and foot, in the block S90-S99 (Injuries to the ankle and foot).
Is S99.8 a billable code?
No. S99.8 is a header code with more specific child codes; report one of the billable codes listed above.
What category does S99.8 belong to?
It belongs to category S99 – Other and unspecified injuries of ankle and foot.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.