S82.456C — Nondisplaced comminuted fracture of shaft of unspecified fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC
Is S82.456C billable?
Yes, but S82.456C will trip a Medicare edit. S82.456C is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, CMS lists S82.456C under Medicare Code Editor edit 20, “Unspecified code” — meaning a code specifying laterality (right, left or bilateral) exists in the same family. On an inpatient claim this triggers the edit, because CMS holds that there are very limited circumstances in which laterality cannot be documented.
More specific alternatives
- S82.451CDisplaced comminuted fracture of shaft of right fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC
- S82.452CDisplaced comminuted fracture of shaft of left fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC
- S82.454CNondisplaced comminuted fracture of shaft of right fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC
- S82.455CNondisplaced comminuted fracture of shaft of left fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC
S82.456C at a glance
| Code | S82.456C |
|---|---|
| Description | Nondisplaced comminuted fracture of shaft of unspecified fibula, initial encounter for open fracture type IIIA, IIIB, or IIIC |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "C" | initial encounter for open fracture type IIIA, IIIB, or IIIC |
What does the 7th character "C" mean in S82.456C?
In S82.456C, the 7th character C means initial encounter for open fracture type IIIA, IIIB, or IIIC. The 7th character is required for S82.456C to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
- Ainitial encounter for closed fractureS82.456A
- Binitial encounter for open fracture type I or IIS82.456B
- Cinitial encounter for open fracture type IIIA, IIIB, or IIICS82.456C
- Dsubsequent encounter for closed fracture with routine healingS82.456D
- Esubsequent encounter for open fracture type I or II with routine healingS82.456E
- Fsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healingS82.456F
- Gsubsequent encounter for closed fracture with delayed healingS82.456G
- Hsubsequent encounter for open fracture type I or II with delayed healingS82.456H
- Jsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healingS82.456J
- Ksubsequent encounter for closed fracture with nonunionS82.456K
- Msubsequent encounter for open fracture type I or II with nonunionS82.456M
- Nsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunionS82.456N
- Psubsequent encounter for closed fracture with malunionS82.456P
- Qsubsequent encounter for open fracture type I or II with malunionS82.456Q
- Rsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunionS82.456R
- SsequelaS82.456S
What Medicare edits apply to S82.456C?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name S82.456C directly.
A code specifying laterality (right, left or bilateral) exists in the same family. CMS holds that there are very limited circumstances in which laterality cannot be documented.
Which MS-DRGs does S82.456C group to?
S82.456C sits in MDC 08 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.
- 562Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCCmedical
- 563Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCCmedical
As a secondary diagnosis, S82.456C is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG. It also carries Hospital-Acquired Condition category 05.
How is S82.456C listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S82.45, the nearest indexed parent of S82.456C. Use them to find the family, then select the specific code.
- Fracture, traumatic › fibula › comminuted (abduction) (adduction) (separation)
- Fracture, traumatic › fibula › comminuted › nondisplaced (abduction) (adduction) (separation)
Excludes1 — never code together — inherited from S82
The conditions below can never be reported together with S82.456C on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- traumatic amputation of lower leg (S88.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S82.456C to fully describe the condition. S82.456C 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 S82.456C, but a patient may have both at the same time. When documentation supports it, S82.456C and the excluded code may both be reported.
Excludes2 — not included here — inherited from S80-S89
The conditions below are not part of S82.456C, but a patient may have both at the same time. When documentation supports it, S82.456C and the excluded code may both be reported.
Excludes2 — not included here — inherited from S82
The conditions below are not part of S82.456C, but a patient may have both at the same time. When documentation supports it, S82.456C and the excluded code may both be reported.
Excludes2 — not included here — inherited from S82.4
The conditions below are not part of S82.456C, but a patient may have both at the same time. When documentation supports it, S82.456C and the excluded code may both be reported.
- fracture of lateral malleolus alone (S82.6-)
How long has S82.456C existed?
S82.456C 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.