S91 — Open wound of ankle, foot and toes
Is S91 billable?
No — S91 is a non-billable header code. S91 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 60 billable codes beneath S91.
Billable codes under this header
- S91.001AUnspecified open wound, right ankle, initial encounter
- S91.001DUnspecified open wound, right ankle, subsequent encounter
- S91.001SUnspecified open wound, right ankle, sequela
- S91.002AUnspecified open wound, left ankle, initial encounter
- S91.002DUnspecified open wound, left ankle, subsequent encounter
- S91.002SUnspecified open wound, left ankle, sequela
- S91.009AUnspecified open wound, unspecified ankle, initial encounter
- S91.009DUnspecified open wound, unspecified ankle, subsequent encounter
- S91.009SUnspecified open wound, unspecified ankle, sequela
- S91.011ALaceration without foreign body, right ankle, initial encounter
- S91.011DLaceration without foreign body, right ankle, subsequent encounter
- S91.011SLaceration without foreign body, right ankle, sequela
- S91.012ALaceration without foreign body, left ankle, initial encounter
- S91.012DLaceration without foreign body, left ankle, subsequent encounter
- S91.012SLaceration without foreign body, left ankle, sequela
- S91.019ALaceration without foreign body, unspecified ankle, initial encounter
- S91.019DLaceration without foreign body, unspecified ankle, subsequent encounter
- S91.019SLaceration without foreign body, unspecified ankle, sequela
- S91.021ALaceration with foreign body, right ankle, initial encounter
- S91.021DLaceration with foreign body, right ankle, subsequent encounter
- S91.021SLaceration with foreign body, right ankle, sequela
- S91.022ALaceration with foreign body, left ankle, initial encounter
- S91.022DLaceration with foreign body, left ankle, subsequent encounter
- S91.022SLaceration with foreign body, left ankle, sequela
- S91.029ALaceration with foreign body, unspecified ankle, initial encounter
- S91.029DLaceration with foreign body, unspecified ankle, subsequent encounter
- S91.029SLaceration with foreign body, unspecified ankle, sequela
- S91.031APuncture wound without foreign body, right ankle, initial encounter
- S91.031DPuncture wound without foreign body, right ankle, subsequent encounter
- S91.031SPuncture wound without foreign body, right ankle, sequela
- S91.032APuncture wound without foreign body, left ankle, initial encounter
- S91.032DPuncture wound without foreign body, left ankle, subsequent encounter
- S91.032SPuncture wound without foreign body, left ankle, sequela
- S91.039APuncture wound without foreign body, unspecified ankle, initial encounter
- S91.039DPuncture wound without foreign body, unspecified ankle, subsequent encounter
- S91.039SPuncture wound without foreign body, unspecified ankle, sequela
- S91.041APuncture wound with foreign body, right ankle, initial encounter
- S91.041DPuncture wound with foreign body, right ankle, subsequent encounter
- S91.041SPuncture wound with foreign body, right ankle, sequela
- S91.042APuncture wound with foreign body, left ankle, initial encounter
- S91.042DPuncture wound with foreign body, left ankle, subsequent encounter
- S91.042SPuncture wound with foreign body, left ankle, sequela
- S91.049APuncture wound with foreign body, unspecified ankle, initial encounter
- S91.049DPuncture wound with foreign body, unspecified ankle, subsequent encounter
- S91.049SPuncture wound with foreign body, unspecified ankle, sequela
- S91.051AOpen bite, right ankle, initial encounter
- S91.051DOpen bite, right ankle, subsequent encounter
- S91.051SOpen bite, right ankle, sequela
- S91.052AOpen bite, left ankle, initial encounter
- S91.052DOpen bite, left ankle, subsequent encounter
- S91.052SOpen bite, left ankle, sequela
- S91.059AOpen bite, unspecified ankle, initial encounter
- S91.059DOpen bite, unspecified ankle, subsequent encounter
- S91.059SOpen bite, unspecified ankle, sequela
- S91.101AUnspecified open wound of right great toe without damage to nail, initial encounter
- S91.101DUnspecified open wound of right great toe without damage to nail, subsequent encounter
- S91.101SUnspecified open wound of right great toe without damage to nail, sequela
- S91.102AUnspecified open wound of left great toe without damage to nail, initial encounter
- S91.102DUnspecified open wound of left great toe without damage to nail, subsequent encounter
- S91.102SUnspecified open wound of left great toe without damage to nail, sequela
S91 at a glance
| Code | S91 |
|---|---|
| Description | Open wound of ankle, foot and toes |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with S91 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- open fracture of ankle, foot and toes (S92.-with 7th character B)
- traumatic amputation of ankle and foot (S98.-)
Code also
Two codes may be needed to describe the condition fully. Whether S91 is sequenced first depends on the reason for the encounter.
- any associated wound infection
Use additional code — inherited from Chapter 19
Report an additional code alongside S91 to fully describe the condition. S91 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 S91, but a patient may have both at the same time. When documentation supports it, S91 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S91, but a patient may have both at the same time. When documentation supports it, S91 and the excluded code may both be reported.
What codes fall under S91? (4)
How long has S91 existed?
S91 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.