S91.256 — Open bite of unspecified lesser toe(s) with damage to nail
Is S91.256 billable?
No — S91.256 is a non-billable header code. S91.256 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 3 billable codes beneath S91.256.
S91.256 at a glance
| Code | S91.256 |
|---|---|
| Description | Open bite of unspecified lesser toe(s) with damage to nail |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S91.256 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S91.25, the nearest indexed parent of S91.256. Use them to find the family, then select the specific code.
- Bite › toe › with › damage to nail (s) (animal) (human)
- Bite › toe › great › with › damage to nail (s) (animal) (human)
- Bite › toe › lesser › with › damage to nail (s) (animal) (human)
Excludes1 — never code together — inherited from S91
The conditions below can never be reported together with S91.256 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.-)
Excludes1 — never code together — inherited from S91.25
The conditions below can never be reported together with S91.256 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 19
Report an additional code alongside S91.256 to fully describe the condition. S91.256 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 S91.256, but a patient may have both at the same time. When documentation supports it, S91.256 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S91.256, but a patient may have both at the same time. When documentation supports it, S91.256 and the excluded code may both be reported.
Code also — inherited from S91
Two codes may be needed to describe the condition fully. Whether S91.256 is sequenced first depends on the reason for the encounter.
- any associated wound infection
What codes fall under S91.256? (3)
How long has S91.256 existed?
S91.256 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.
What other codes are in the S91.25 family? (6)
- S91.251Open bite of right great toe with damage to nailnot billable
- S91.252Open bite of left great toe with damage to nailnot billable
- S91.253Open bite of unspecified great toe with damage to nailnot billable
- S91.254Open bite of right lesser toe(s) with damage to nailnot billable
- S91.255Open bite of left lesser toe(s) with damage to nailnot billable
- S91.259Open bite of unspecified toe(s) with damage to nailnot billable