Open surgical fixation of a distal tibia (pilon/tibial plafond) fracture involving internal fixation of both the tibia and fibula.

Verified May 8, 2026 · 7 sources ↓

Medicare: $1,230.16
Total RVUs: 36.83
Global, days: 90
Region: Foot & ankle

Drawn from AAPCEmednyCMSAMA

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 7 cited references ↓

Operative note must identify direct hardware placement on both tibia and fibula — indirect fibular stabilization through tibial fixation does not support 27828
Document the fracture pattern by name (pilon, tibial plafond) and specify articular surface involvement of the distal tibia
Record all fixation devices used (plates, screws, rods, pins, wires) on each bone separately
If external fixation is applied at the same session, document it as a distinct procedural step with device type to support separate billing
For staged procedures (e.g., initial external fixation with planned conversion to internal fixation), document the staged plan explicitly to support modifier 58 on the subsequent claim
Note laterality (left vs. right) in both the operative report and the claim to support LT/RT modifiers

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 50 Bilateral procedure 51 Multiple procedures 58 Staged or related 59 Distinct service 76 Repeat, same physician 78 Unplanned return — related 79 Unrelated during global LT Left side RT Right side 80 Assistant surgeon 62 Co-surgeons

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 27828 describes open treatment of a fracture of the weight-bearing articular surface of the distal tibia — commonly called a pilon or tibial plafond fracture — with internal fixation applied to both the tibia and the fibula. This is the most extensive code in the 27826–27828 family: 27826 covers fibula fixation only, 27827 covers tibia fixation only, and 27828 requires direct instrumentation of both bones. If the surgeon stabilizes the fibula indirectly through tibial fixation without placing hardware directly on the fibula, 27827 is correct — not 27828.

The 90-day global period covers the day-before visit, the procedure itself, and all routine post-op care through day 90. Staged returns to the OR for planned conversion from external to internal fixation require modifier 58. An unplanned return for a related complication uses modifier 78. Unrelated procedures in the global window use modifier 79. External fixation applied at the same session may be separately reportable — the 27828 descriptor addresses internal fixation, so a separately documented external fixation device (e.g., uniplane frame) can be billed with its own code.

NCCI edits are active between 27828 and 27829 (open syndesmosis disruption repair). Because syndesmosis injuries frequently accompany pilon fractures, coders often attempt to report both — but NCCI treats 27829 as a component of the more extensive procedure when performed through the same exposure. Modifier 59 or XS may override the edit only when the syndesmosis repair is performed through a distinctly separate incision and is independently documented.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	17.97
Practice expense RVU	15.22
Malpractice RVU	3.64
Total RVU	36.83
Medicare national rate	$1,230.16
Global period	90 days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

Setting	Medicare rate (national)
Office (PFS non-facility) Procedure performed in physician's office	$1,230.16
HOPD (APC 5115) Hospital outpatient department	$13,116.76
ASC (PI J8) Ambulatory surgical center (freestanding)	$9,196.24

Common denial reasons

The recurring reasons claims for CPT 27828 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

Upcoding flag when fibula fixation is indirect — payers and audit teams downcode 27828 to 27827 if the operative note lacks documentation of direct hardware on the fibula
NCCI bundling denial when 27829 is billed same-day through the same incision without a modifier supported by separate-site documentation
Global period denial for post-op visits or minor procedures billed without modifier 24 or 25 within the 90-day window
Modifier 58 missing on staged internal fixation return — payer treats the second procedure as included in the global and denies without it
Laterality modifier absent (LT or RT), triggering a claim edit or development request from Medicare and many commercial payers

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 7 cited references ↓

01What distinguishes 27828 from 27827?

27827 covers open fixation of the tibia only. 27828 requires direct internal fixation of both the tibia and fibula. If the fibula is stabilized only indirectly through tibial hardware, 27827 is correct — 27828 demands its own hardware on the fibula.

02Can 27829 be billed with 27828 when a syndesmosis tear is also repaired?

Not through the same incision. NCCI treats 27829 as a component of the more extensive pilon repair when performed through the same exposure. If the syndesmosis repair is done through a distinctly separate incision with independent documentation, modifier 59 or XS may override the edit — but expect scrutiny.

03Is external fixation included in 27828?

No. The 27828 descriptor addresses internal fixation. A separately applied external fixation device — documented as a distinct procedural step — can be reported with an appropriate external fixation code (e.g., 20690 for a uniplane unilateral frame) in addition to 27828.

04How do staged procedures affect coding when the surgeon applies external fixation first and returns for internal fixation?

Report the initial external fixation separately. When the surgeon returns within the global period to perform internal fixation — as planned — append modifier 58 to 27828 on the second claim. Without modifier 58, the payer will deny the return-to-OR claim as included in the global.

05What modifier applies if the surgeon must return to the OR unexpectedly for a wound complication related to the original pilon repair?

Modifier 78 — unplanned return to the OR for a related procedure during the postoperative period. Do not use 79 for related complications; 79 is reserved for procedures entirely unrelated to the original surgery.

06Does the 90-day global period affect billing for fracture follow-up visits?

Yes. Routine post-op visits within 90 days are bundled. If a visit addresses a new problem or an unrelated condition, append modifier 24 to the E/M code. If a significant, separately identifiable E/M is performed on the same day as a procedure, use modifier 25.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

Mira's AI scribe captures direct hardware placement on both the tibia and fibula from dictation — including implant type, size, and fixation sequence on each bone separately. It also flags whether external fixation was applied as a distinct step and whether the syndesmosis was addressed and through which incision. This prevents the most common audit trigger for 27828: operative notes that describe tibial fixation in detail but fail to document independent fibular instrumentation, causing payers to downcode to 27827.

See how Mira captures CPT 27828 documentation