As winter gives way to spring, many are relieved to leave behind icy sidewalks and the inevitable steady number of fall-related injuries that come with them. Yet in long-term care, fractures do not simply disappear with the snow; instead, the reason for them often becomes more subtle. One of the key distinctions in ICD-10-CM and the MDS comes into play here: understanding whether a fracture is traumatic or pathologic.
At first glance, a fracture may seem straightforward: a resident falls, a bone breaks, and care follows. But clinically and from a coding perspective, the situation is rarely that simple. This distinction determines code selection, impacts reimbursement, and influences how the resident’s condition is reflected on the MDS.
This article clarifies the differences between traumatic and pathologic fractures in ICD-10-CM and MDS coding, highlights the importance of clear provider documentation, and outlines the implications for interdisciplinary team members responsible for assessment, documentation, and care planning.
ICD-10-CM: Two Very Different Fracture Stories
In ICD-10-CM, traumatic fractures are coded from chapter 19 that addresses injuries and external causes. These fractures result from a specific event such as a fall on a patch of lingering ice or a misstep during a transfer. Pathologic fractures, in contrast, are coded from chapter 13 and reflect a very different process. These fractures occur in bones weakened by disease, often with minimal or no trauma. The key difference lies not in the fracture itself, but in the bone’s condition before it broke. Understanding this distinction requires considering the underlying condition of the bone itself.
Healthy bone is resilient and continuously remodels, maintaining a balance between formation and resorption. When that equilibrium is disrupted due to osteoporosis, osteopenia, metastatic cancer, or other metabolic conditions, the structural integrity of the bone is compromised (National Institute of Arthritis and Musculoskeletal and Skin Diseases, 2023, 2025).
In these situations, fractures may occur during routine activities or with minimal stress. What appears to be a fall-related fracture may, in fact, result from an underlying disease process that weakened the bone long before the incident occurred. As winter hazards diminish, these less visible risks often become more obvious.
From a coding perspective, the clinical distinction just described drives code selection directly. When a resident with known osteoporosis sustains a fracture, a code from category M80 (Osteoporosis with current pathological fracture) must be assigned rather than a traumatic fracture code—even if a minor fall or trauma occurred—if the event would not typically result in a fracture in a healthy bone (CMS, 2025a). This coding choice reinforces that the underlying bone condition, not simply the presence of a fall, determines whether a fracture is coded as pathologic.
ICD-10-CM also requires careful attention to 7th character assignment that reflects the phase of care rather than the provider. For both traumatic and pathologic fractures, the 7th character “A” (initial encounter) is used while the patient is receiving active treatment, regardless of whether he or she is seen by the same or a different provider. This scenario typically occurs in the hospital setting where the fracture is first treated. Once active treatment is complete and the resident is receiving routine care during the healing or recovery phase, generally taking place in the long-term care setting, the 7th character “D” (subsequent encounter) is assigned. Additional 7th characters are used to identify complications such as malunion, nonunion, or sequelae.
For traumatic fractures, coding follows injury coding conventions: assigning site-specific codes and applying the appropriate 7th character for the episode of care. Fractures not specified as open or closed are coded as closed. Those not specified as displaced or nondisplaced are coded as displaced (CMS, 2025a). Importantly, aftercare Z codes are not used for traumatic fractures. Instead, the fracture code itself is continued with the appropriate 7th character to reflect the stage of healing (CMS, 2025a).
Together, these guidelines reinforce that accurate fracture coding depends on both clinical understanding and precise provider documentation, particularly when distinguishing between traumatic and pathologic fractures and determining the appropriate phase of care.
Documentation: The Make-or-Break Factor
Accurate documentation is essential. Per ICD-10-CM guidelines, code assignment is based on the provider’s diagnostic statement. Accurate coding requires complete and specific documentation. Coding professionals must not assume a fracture is traumatic or pathologic based solely on circumstances. Even when a resident experiences a fall, if the provider determines osteoporosis is the cause of the fracture, it must be coded as pathologic.
Conversely, if a traumatic fracture is documented, the presence of underlying bone disease does not automatically change that classification. The guidelines define the provider as a physician or other qualified healthcare practitioner legally responsible for establishing the diagnosis. Therefore, distinguishing between traumatic and pathologic fractures must be explicitly documented by a physician or nonphysician practitioner (NPP), as allowed by state law. Unclear documentation requires a query to ensure accuracy.
MDS Coding of Fracture
The distinction also carries into the MDS, where both section I and section J may be involved but for different reasons. In section I, Active Diagnoses in the Last 7 Days, the assessor checks applicable diagnosis categories. The assessor may also directly enter an ICD-10-CM code in item I8000 when the diagnosis is active and directly relates to the resident’s current functional status, cognitive or mood status, medical treatments, nursing monitoring, or risk of death (CMS, 2025b).
By contrast, section J does not function as a diagnosis coding section. Instead, it documents health conditions that affect the resident’s functional status and quality of life, including falls and injuries related to falls. At this juncture, the traumatic-versus-pathologic fracture distinction becomes especially important. Effective with the October 2025 RAI User’s Manual guidance for J1900, a traumatic fracture may be coded as a major injury related to a fall, whereas a pathologic fracture is not considered a major injury from a fall. CMS provides contrasting examples. When a physician confirms the fracture is due to osteoporosis rather than the fall, J1900C (Major Injury) is coded 0 (None), but the fall is still reflected in J1800. When the physician confirms the fracture is due to the fall and not the resident’s osteoporosis, J1900C is coded 1 or 2, depending on the number of falls with major injury during the observation period.
This requirement underscores the importance of physician or state-authorized NPP documentation in determining how the fracture is coded across both sections. In section I, the fracture diagnosis or its underlying condition may be captured as an active diagnosis, including by direct ICD-10-CM entry in I8000 when appropriate. In section J, the assessor captures the clinical impact of the event, including whether a fall occurred and whether that fall resulted in a major injury. Thus, the distinction between traumatic and pathologic fracture must be clearly established by the physician or state-authorized NPP so both section I and section J codes accurately reflect the resident’s clinical picture.
Why Type of Fracture Still Matters on the MDS
The type of fracture directly influences how it is interpreted in the MDS and addressed in the care plan. A traumatic fracture is typically associated with a fall and may prompt interventions focused on fall prevention, environmental safety, and rehabilitation. A pathologic fracture, however, signals an underlying disease process requiring broader clinical management. In these situations, care planning may shift toward managing osteoporosis, addressing malignancy, or implementing strategies to prevent additional fractures. The fracture is no longer viewed as an isolated event but rather as part of a larger clinical condition. The RAI process emphasizes that accurate assessment requires interdisciplinary input and depends on clear, clinically supported documentation to guide decision-making and care planning.
Stepping Into Spring with Clarity
As warmer weather arrives and icy conditions subside, fracture risk does not disappear but rather evolves. Residents with compromised bone health remain at risk, and fractures may occur without a clear external cause. Recognizing the difference between traumatic and pathologic fractures allows the interdisciplinary team to better understand the resident’s condition and address underlying causes. Accurate coding and effective care ultimately depend on clear, precise provider documentation. The fracture itself is only part of the story. Whether caused by a fall or by weakened bone, understanding the underlying factors ensures that both coding and care reflect the resident’s true clinical picture.
Additional AAPACN ICD-10-CM Resources and Education
AAPACN Articles:
- ICD-10-CM Coding Spotlight Series – Part 1: Coding with Heart: Navigating ICD-10-CM Cardiac Coding in Long-Term Care
- ICD-10-CM Coding Spotlight Series – Part 2: Navigating Genitourinary Conditions in Long-Term Care
- ICD-10-CM Coding Spotlight Series – Part 3: Sweet Details Matter: Navigating Diabetes ICD-10-CM Coding
AAPACN Education:
AAPACN Tools:
- Quick Reference Guide: Traumatic versus Pathologic Fracture
- Provider ICD-10-CM Documentation Tip Sheet for Long-Term Care
- ICD-10-CM Coding Convention Terminology Quick Reference Guide
References
Centers for Medicare & Medicaid Services. (2025a). ICD-10-CM official guidelines for coding and reporting, FY 2026 (October 1, 2025 – September 30, 2026). https://www.cms.gov/files/document/fy-2026-icd-10-cm-coding-guidelines.pdf
Centers for Medicare & Medicaid Services. (2025b). Long-term care facility resident assessment instrument (RAI) user’s manual (Version 1.20.1). https://www.cms.gov/medicare/quality/nursing-home-improvement/resident-assessment-instrument-manual
National Institute of Arthritis and Musculoskeletal and Skin Diseases. (2023). What is bone? U.S. Department of Health and Human Services. https://www.niams.nih.gov/health-topics/bone-health-and-osteoporosis
National Institute of Arthritis and Musculoskeletal and Skin Diseases. (2025). Bone health and osteoporosis. U.S. Department of Health and Human Services. https://www.niams.nih.gov/health-topics/bone-health-and-osteoporosis
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