ICD-10 code S82.252G: Left tibia fracture with delayed healing

Key takeaways

S82.252G describes a displaced comminuted fracture of the shaft of the left tibia, coded on a subsequent encounter for a closed fracture with delayed healing.

The 7th character G is what makes this code specific. It confirms a follow-up visit where healing is slower than expected. It rules out a first-time presentation (A/B/C), nonunion (K), and malunion (P).

Most coding errors on this code involve using the initial-encounter suffix (A) on follow-up visits. That mismatch triggers claim denials and audit flags from Medicare and commercial payers.

Practice management software like Pabau connects to the Claim.MD clearinghouse, validating codes such as S82.252G against payer rules before submission.

ICD-10 code S82.252G is a billable diagnosis code for a displaced comminuted fracture of the shaft of the left tibia. It applies on a subsequent encounter for a closed fracture with delayed healing.

The 7th character G carries most of that meaning. It marks a follow-up visit where the bone is healing more slowly than expected for the injury and the time elapsed.

That one character separates S82.252G from routine healing (D), nonunion (K), and malunion (P). This reference breaks the code down character by character. It also covers 7th character selection, the code hierarchy, sibling codes, the ICD-9 crosswalk, and the documentation a coder needs before assigning it.

S82.252G at a glance

S82.252G is a billable ICD-10-CM diagnosis code valid for HIPAA-covered transactions. It is valid in the 2026 edition of ICD-10-CM, which took effect October 1, 2025.

The code itself has been in the code set since ICD-10-CM implementation in October 2015. The table below captures the reference details coders need before assigning it.

What does ICD-10 code S82.252G mean?

Each character in S82.252G carries a specific clinical meaning. Reading the code segment by segment removes any ambiguity about the patient presentation it describes. According to the CMS ICD-10-CM coding guidelines, all characters must reflect documented clinical findings. Coders cannot infer information the record does not state.

• S82 – Fractures of lower leg, including ankle. This is the parent code range covering tibial and fibular fractures.
• .2 – Fracture of shaft (diaphysis) of tibia. The shaft is the long middle portion of the bone, distinct from the proximal or distal metaphysis.
• .25 – Comminuted fracture of shaft of tibia. The bone has fractured into three or more fragments, indicating higher-energy trauma.
• .252 – Displaced comminuted fracture of shaft of the left tibia. The digit 2 confirms left-side laterality. Displacement means the bone fragments have shifted out of normal alignment.
• G – Subsequent encounter for closed fracture with delayed healing. The 7th character G identifies this as a follow-up visit, not the initial treatment episode. It also confirms that healing is progressing more slowly than expected for the injury type and time elapsed.

Taken together, S82.252G tells the payer a specific story. The patient has a multi-fragment, displaced left tibial shaft fracture sustained in a closed mechanism. They are returning for ongoing care, and the fracture is not healing within the expected timeframe. Each of those five clinical facts must be supported by documentation in the medical record.

Choosing the 7th character: G, D, K, or P

The 7th character is the most consequential coding decision for any fracture in the S82 family. Selecting the wrong suffix is the leading cause of claim denials on tibia fracture codes. The table below lists all valid 7th characters for the S82.252 code family, with their clinical definitions.

Delayed healing vs nonunion vs malunion

These three outcomes are clinically distinct. The ICD-10-CM Official Guidelines require the physician to document the specific healing status before the coder can assign a suffix. The difference between G, K, and P is not a coder’s judgment call.

• Delayed healing (G): The fracture is showing callus formation or some healing activity. Progress is simply slower than expected for the injury type and time elapsed. The physician documents “delayed healing” explicitly. Bone union is still anticipated.
• Nonunion (K): The healing process has ceased. Bridging callus formation has stopped and the fracture gap persists. The physician documents “nonunion” or clinical findings consistent with failed healing. Use S82.252K for a closed left tibia shaft comminuted fracture with nonunion.
• Malunion (P): The fracture has healed, but in a position of deformity, shortening, or angulation. The physician documents “malunion.” Use S82.252P for a closed left tibia shaft comminuted fracture with malunion.

For a closed fracture, the whole decision reduces to the care phase plus one phrase in the physician’s note. The visual below maps each phrase to the code it supports.

Initial, subsequent, and sequela encounters

According to ICD-10-CM Official Guidelines Section I.C.19, the encounter type follows the patient’s care phase, not the calendar.

A patient can receive initial encounter coding (A, B, or C) at multiple visits while receiving active surgical or non-surgical treatment. Subsequent encounter coding (D through R) begins when the patient reaches the recovery or rehabilitation phase of care.

Where S82.252G sits in the ICD-10-CM hierarchy

Knowing where S82.252G sits in the hierarchy helps coders navigate related codes and verify code specificity. The WHO ICD-10 classification browser and the CDC/NCHS ICD-10-CM web tool both provide hierarchical navigation for code verification. The parent code tree for S82.252G is:

Related codes in the S82.252 family

The S82.252 family covers only the left tibia. Laterality and 7th character are both required for a billable code. Coders apply the same laterality conventions across every family in our ICD-10-CM codes reference. The most frequently referenced sibling codes alongside S82.252G are shown below.

Note: S82.253G (unspecified laterality) should only be used when the operative or clinical note genuinely does not specify which side is affected. Laterality is almost always documentable. Payers increasingly flag unspecified-laterality codes for medical review when the record would support a more specific code.

Documentation required to assign ICD-10 code S82.252G

Assigning S82.252G requires that five specific clinical facts appear in the medical record. Missing any one of them means the coder should either query the physician or select a less specific code.

• Fracture type is comminuted: The operative report, imaging interpretation, or clinical note must describe a comminuted (multi-fragment) fracture pattern. “Comminuted” must be explicit; “complex” or “severely displaced” alone are insufficient.
• Fracture is displaced: The physician must document displacement. Imaging reports alone do not substitute for physician documentation of displacement as a clinical finding.
• Anatomical site is shaft of the left tibia: Both the shaft (diaphysis) location and left-sided laterality must be confirmed in the record. Proximal or distal tibia fractures fall under different codes.
• Fracture is closed: The skin must remain intact over the fracture. If wound documentation is absent or ambiguous, the physician should clarify before a closed-fracture suffix is assigned.
• Healing is delayed: The treating physician must document “delayed healing” or a clinical description consistent with it. One example is minimal callus formation beyond the expected healing window. This is a clinical determination, not a coder inference.

Practices with high orthopedic coding volume should build structured documentation templates for follow-up visits. A template that prompts the physician on each of those five elements is the cheapest fix available. Laterality, fracture type, and healing status then arrive as structured fields rather than free text.

ICD-9-CM equivalent and legacy crosswalk

Practices migrating legacy data or working with older claims may need the ICD-9 equivalent. The General Equivalence Mapping (GEM) crosswalk translates S82.252G to ICD-9-CM V54.16 (Aftercare for healing traumatic fracture of lower leg). That mapping has limits worth understanding before you rely on it for anything beyond historical data.

The GEM crosswalk is a one-to-many mapping. V54.16 maps to multiple ICD-10-CM codes across the S82 family, so it does not carry the specificity of the modern code.

For any current billing transaction, use S82.252G directly. V54.16 is relevant only for historical data analysis, legacy system integration, or a payer that specifically requests an ICD-9 equivalent.

Common coding errors on S82.252G and how to avoid them

The S82.252 code family generates a disproportionate share of orthopedic claim rejections. Three error-prone decisions collide on it. The coder has to settle the encounter type, the healing status, and the open-versus-closed classification, and each one is avoidable with the right documentation workflow.

A working denial management process turns each rejection into a corrected resubmission rather than a write-off. Practices submitting ICD-10 claims through claims management software can configure payer-specific edits that flag these mismatches before submission.

• Error 1: Using the initial-encounter suffix (A) on follow-up visits. This is the most common and most consequential error. Once the patient completes the active-treatment phase and moves to routine follow-up or rehabilitation, the 7th character must change. On a closed fracture, that means D, G, K, or P instead. Submitting S82.252A on a 12-week post-operative visit is a mismatch that many payers flag automatically. Resolution: document the care phase explicitly in every visit note.
• Error 2: Confusing delayed healing (G) with nonunion (K). Coders sometimes upgrade a delayed-healing finding to nonunion because the patient has been in recovery longer than expected. Nonunion requires physician documentation that healing has stopped, not merely that it is slow. Using K when the physician documented only “delayed healing” overstates the complication and creates audit exposure. Resolution: query the physician when the clinical picture is ambiguous.
• Error 3: Missing laterality. Assigning S82.253G (unspecified laterality) when the record clearly documents the left side wastes specificity. It may also trigger a medical-necessity review from payers who expect laterality on leg fracture codes. Resolution: verify laterality in the operative report and the imaging study before coding.
• Error 4: Incorrectly classifying an open fracture as closed. If wound documentation is ambiguous or absent and the coder defaults to the closed-fracture 7th character, the code may not reflect the clinical event. Open fractures carry different 7th character options (B, C, E, F, H, J, M, N, Q, R) and higher reimbursement weights in certain DRG groupings. Resolution: request clarification from the treating physician rather than defaulting to closed.

Practices that track denial patterns by code can see which of these four errors generates the most rework. That is the number worth watching after any change to the follow-up note template.

Approximate synonyms and clinical terminology

The following clinical descriptions map to S82.252G. All are acceptable in physician documentation when they accurately reflect the patient’s condition. Coders should recognize these terms and understand that they converge on the same code assignment.

• Delayed healing, comminuted fracture, left tibial shaft (closed)
• Left tibia shaft comminuted fracture, subsequent care, delayed union
• Displaced, multi-fragment fracture of left tibial diaphysis, follow-up, delayed healing
• Closed comminuted displaced fracture of the shaft of the left tibia, aftercare, delayed healing
• Left tibial shaft fracture with delayed fracture healing, subsequent encounter
• Comminuted fracture left tibia, subsequent visit, healing delayed beyond expected timeline

None of these phrases are billable codes themselves. The coder’s role is to recognize that these descriptions satisfy the five documentation requirements for S82.252G. The code turns up across orthopedic, sports medicine, and trauma billing.

How claims management software keeps S82.252G claims clean

In most orthopedic practices the 7th character gets decided twice. The physician writes a follow-up note in one system, and days later a coder reads it and picks a suffix. If the note says “slow progress” rather than “delayed healing,” the coder either raises a query or takes a guess.

Pabau closes that loop inside a single patient record. The follow-up note template asks for laterality, fracture pattern, and healing status while the patient is still in the room. The coder then reads structured fields instead of interpreting free-text prose.

From there the claim goes out through the Claim.MD clearinghouse, and Pabau validates the diagnosis code against payer rules first. An encounter-type mismatch or a missing laterality surfaces while the claim is still yours to fix. That turns a denial into a correction you make before the claim leaves the practice.

Simplify orthopedic billing with integrated claims management

Pabau connects clinical documentation directly to claims submission via the Claim.MD clearinghouse. It validates ICD-10 codes including S82.252G against payer rules before the claim leaves your system. See how it works for your practice.

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Conclusion

S82.252G captures a precise clinical scenario. It describes a displaced, comminuted, closed left tibial shaft fracture on a subsequent encounter, with healing running behind schedule. Every character in the code is a commitment to a documented clinical fact, and the 7th character is where orthopedic billing teams most often slip.

The practical fix sits upstream of the coder. Get “delayed healing” into the follow-up note as a required field, and the suffix stops being a judgment call. Do nothing, and the same four errors keep arriving as denials months after the visit.

Pabau connects clinical documentation to code validation and submission through the Claim.MD clearinghouse, catching encounter-type and laterality mismatches before they become denials. To see how that works for orthopedic and trauma billing, book a demo with our team.

Continue your research

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