S99.9 — Unspecified injury of ankle and foot
Is S99.9 billable?
No — S99.9 is a non-billable header code. S99.9 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 18 billable codes beneath S99.9.
Billable codes under this header
- S99.911AUnspecified injury of right ankle, initial encounter
- S99.911DUnspecified injury of right ankle, subsequent encounter
- S99.911SUnspecified injury of right ankle, sequela
- S99.912AUnspecified injury of left ankle, initial encounter
- S99.912DUnspecified injury of left ankle, subsequent encounter
- S99.912SUnspecified injury of left ankle, sequela
- S99.919AUnspecified injury of unspecified ankle, initial encounter
- S99.919DUnspecified injury of unspecified ankle, subsequent encounter
- S99.919SUnspecified injury of unspecified ankle, sequela
- S99.921AUnspecified injury of right foot, initial encounter
- S99.921DUnspecified injury of right foot, subsequent encounter
- S99.921SUnspecified injury of right foot, sequela
- S99.922AUnspecified injury of left foot, initial encounter
- S99.922DUnspecified injury of left foot, subsequent encounter
- S99.922SUnspecified injury of left foot, sequela
- S99.929AUnspecified injury of unspecified foot, initial encounter
- S99.929DUnspecified injury of unspecified foot, subsequent encounter
- S99.929SUnspecified injury of unspecified foot, sequela
S99.9 at a glance
| Code | S99.9 |
|---|---|
| Description | Unspecified injury of ankle and foot |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code — inherited from Chapter 19
Report an additional code alongside S99.9 to fully describe the condition. S99.9 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S99.9, but a patient may have both at the same time. When documentation supports it, S99.9 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S99.9, but a patient may have both at the same time. When documentation supports it, S99.9 and the excluded code may both be reported.
What codes fall under S99.9? (2)
How long has S99.9 existed?
S99.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.