ICD-10 Code S82.222E: Displaced transverse fracture of shaft of left tibia

Key takeaways

S82.222E covers a displaced transverse fracture of the shaft of the left tibia at a follow-up visit. The 7th character E adds open fracture type I or II with routine healing.

Assigning E when the notes document malunion is a coding error. Malunion of an open type I or II fracture takes Q, not E.

Malunion and nonunion map to different letters. Malunion uses P, Q, or R and nonunion uses K, M, or N, split by closed, open type I-II, and open type III.

Practice management software like Pabau pulls patient, treatment, and insurer details already on the record into a pre-filled claim. Your billing team still picks the code.

ICD-10 Code S82.222E: Full description and billable status

ICD-10 Code S82.222E is a billable code for a displaced transverse fracture of the shaft of the left tibia. It applies at a subsequent encounter, once the original open fracture has been graded Gustilo type I or II. The bone must be healing normally at that visit.

The code is valid for submission on HIPAA-covered electronic transactions, and the 2026 edition took effect October 1, 2025. You can check its current status with the CDC/NCHS ICD-10-CM web tool. Like S82.291J and the other codes in the S82.2 subcategory, it needs full documentation support before it goes on a claim.

Breaking down the code: what each segment means

Each segment of S82.222E carries specific clinical meaning. Misread one and you end up with the wrong code and a likely denial.

The digit “2” at position S82.222 specifies the transverse fracture pattern. The second “2” at S82.222 locks in left-side laterality. Both matter. Coding the right tibia as S82.221 when the chart documents left is an error, even if the 7th character is right.

How the 7th character works for open fractures

The 7th character does three jobs at once on an open fracture code in the S82 category. It identifies the encounter type, the Gustilo grade, and the healing status. Closed fracture characters track only encounter and healing, which is why open fracture coding takes longer to get right. Other fracture families follow the same pattern, including S92.145K, though the letters on offer differ by category.

The official ICD-10-CM tabular list reads “subsequent encounter for open fracture type I or II with routine healing” for S82.222E. Some lookup tools still show malunion wording for this code, and that is where the confusion starts. Malunion of an open type I or II fracture is S82.222Q. Check the 7th character against the CMS ICD-10-CM tabular list before you submit.

Open fracture classification: Gustilo type I and type II

The Gustilo-Anderson classification is the clinical standard for grading open fracture severity. S82.222E and its sibling characters B, H, M, and Q all apply to Gustilo types I and II. Type III fractures use a different set of characters, namely C, F, J, N, and R.

The Gustilo grade has to appear in the operative or emergency department notes to support S82.222E. A chart that says “open fracture” without a type forces a physician query rather than a coder’s assumption. The AAPC ICD-10-CM code lookup carries more clinical context on open fracture coding. Practitioners at sports medicine and orthopedic practices see this injury pattern often in high-impact trauma.

Malunion vs nonunion: key coding distinctions

Mixing up malunion and nonunion is one of the most audited errors in orthopedic subsequent encounter coding. The clinical difference is clear, and so is the coding consequence.

• Malunion: the fracture has healed, but in an abnormal position. The bone has united. For an open type I or II tibial shaft fracture, that is 7th character Q.
• Nonunion: the fracture has failed to heal at all. No bony bridging has occurred. For open type I or II, that is 7th character M.
• Delayed healing: healing is slower than expected but still moving. For open type I or II, that is 7th character H.
• Routine healing: the fracture is healing normally. For open type I or II subsequent encounters, that is 7th character E.

Payers audit this distinction because malunion and nonunion lead to different follow-up procedures, such as corrective osteotomy or bone grafting. Each carries its own CPT billing. Coding a malunion as routine healing understates the clinical picture and can trigger a medical necessity review. Other fracture families use the same nonunion letter, so a tarsal bone that fails to unite is S92.209K.

Related ICD-10-CM codes in the S82.222 family

S82.222 is the non-billable parent, and every billable code in the family extends it with a 7th character. The table below covers the siblings orthopedic coders reach for most on subsequent encounter claims.

Clinical context: displaced transverse tibial shaft fractures

Displaced transverse fractures of the tibial shaft usually come from high-energy trauma: motor vehicle accidents, falls from height, and direct impact in sport. The tibia sits close to the skin with little soft tissue over it. That is why open fractures are so common at this site.

Malunion in a tibial shaft fracture usually follows inadequate reduction, loss of fixation, or weight bearing before the bone consolidates. In open fractures, wound management can take priority over the alignment achieved at fixation, which makes malunion more likely than in closed injuries. Practices in physical therapy and orthopedics need the healing status recorded at every visit, because that is what drives the 7th character.

Documentation requirements for accurate S82.222E coding

Seven documentation elements have to appear in the chart to support S82.222E. Miss one and you have a query or a denial. Documentation workflows should capture all seven before the encounter is coded.

1. Laterality: the left tibia must be documented explicitly. “Tibia” with no side defaults to an unspecified laterality code.
2. Displacement: the fracture must be confirmed as displaced, not non-displaced. The imaging report needs to state it.
3. Fracture pattern: the transverse pattern must be documented by the treating clinician or in the radiology report.
4. Bone segment: the shaft, or diaphysis, must be specified rather than the proximal or distal tibia.
5. Encounter type: a subsequent encounter, not the initial emergency or surgical encounter.
6. Open fracture classification: Gustilo type I or II, documented by the treating physician rather than inferred by the coder.
7. Healing status: routine healing, confirmed on imaging or clinical assessment at the encounter being coded.

Structured clinical records that prompt for laterality, displacement, pattern, and healing status cut the number of physician queries. That pays off most in practices running high volumes of fracture aftercare visits.

Coding guidelines and CMS compliance for fracture aftercare

The ICD-10-CM Official Guidelines for Coding and Reporting govern fracture subsequent encounter coding. CMS and the National Center for Health Statistics maintain them together. Four points matter most for S82.222E.

• Active treatment rule: the initial encounter characters A, B, and C apply while the patient is still receiving active treatment. That holds across as many visits as the treatment takes. The switch to D, E, or F happens once the fracture is in routine care.
• POA indicator: the Present on Admission indicator is required on inpatient claims. It does not apply to outpatient subsequent encounter visits. Blanket POA statements without payer-specific checks cause processing errors.
• Code sequence: S82.222E is the first-listed diagnosis for the fracture encounter. Secondary codes can be added for associated injuries, but the fracture code has to sequence first.
• External cause codes: an external cause code from V00-Y99 is encouraged alongside an injury code, not mandatory. There is no national reporting requirement, so follow whatever your state or payer asks for.

For practices managing HIPAA compliance, backing every submitted code with documentation is a core obligation. Unsupported code selection carries audit exposure under the CMS fraud and abuse rules. CMS publishes the files for each new code year every October.

Parent and sibling codes: S82 code hierarchy

Knowing where S82.222E sits in the ICD-10-CM hierarchy helps coders move around the family and keeps non-billable parent codes off claims.

Submitting S82.222 without the 7th character gets the claim rejected, because non-billable parent codes are invalid on a claim. Every S82.222x claim needs the full seven characters. The features to look for in practice software include code lookup at the point of claim preparation, which heads off these avoidable rejections.

How Pabau supports accurate ICD-10 coding for orthopedic practices

Orthopedic follow-up visits generate a high volume of subsequent encounter claims, and thin documentation is the leading cause of denials in this category. Practice management software like Pabau holds the treatment note, the patient record, and the insurer details in one place.

Its claims management software then pulls that stored data into a pre-filled claim and submits it. Your billing team stops retyping details that are already on the record. Code selection stays with your coder, but the supporting detail is in front of them when they open the claim.

Practices using Pabau’s digital intake forms can build orthopedic follow-up templates that prompt for fracture side, healing status, and any complication flags. That structure cuts the physician query rate and shortens the billing cycle. The practice management platform also keeps coding workflows consistent across multi-location orthopedic groups.

Cut documentation-related denials on orthopedic claims

Pabau pulls the patient, treatment, and insurer details already on the record into a pre-filled claim, then submits and tracks it. Your billing team spends less time rekeying what the chart already holds.

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Conclusion

The 7th character is where S82.222E is won or lost. The table for S82.222x holds 16 letters. Only one of them fits an open type I or II fracture that is healing normally at a follow-up visit.

So pin the healing status down in the note before the claim goes out. If the chart says malunion, the code is S82.222Q, and no amount of clean billing will fix an E on that claim. If the chart says nothing at all, that is a query, not a judgment call.

Getting that detail into the note is a workflow problem more than a coding problem. Book a demo to see how Pabau keeps fracture aftercare documentation and claims in one place.

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