S91.059D — Open bite, unspecified ankle, subsequent encounter
Is S91.059D billable?
Yes, but S91.059D is an unspecified code. S91.059D is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S91.059D is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting S91.059D — the more specific alternatives are listed below.
More specific alternatives
S91.059D at a glance
| Code | S91.059D |
|---|---|
| Description | Open bite, unspecified ankle, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in S91.059D?
In S91.059D, the 7th character D means subsequent encounter. The 7th character is required for S91.059D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S91.059D group to?
S91.059D sits in MDC 23 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
How is S91.059D listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S91.05, the nearest indexed parent of S91.059D. Use them to find the family, then select the specific code.
- Bite › ankle (s) (animal) (human)
Excludes1 — never code together — inherited from S91
The conditions below can never be reported together with S91.059D 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 S91.05
The conditions below can never be reported together with S91.059D 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 S91.059D to fully describe the condition. S91.059D 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 S91.059D, but a patient may have both at the same time. When documentation supports it, S91.059D and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S91.059D, but a patient may have both at the same time. When documentation supports it, S91.059D and the excluded code may both be reported.
Code also — inherited from S91
Two codes may be needed to describe the condition fully. Whether S91.059D is sequenced first depends on the reason for the encounter.
- any associated wound infection
How long has S91.059D existed?
S91.059D 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.