2026 ICD-10-CM Diagnosis Code M84.469SPathological fracture, unspecified tibia and fibula, sequela
M84.469S is a billable ICD-10-CM diagnosis code for pathological fracture, unspecified tibia and fibula, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 559 through 561. Coders also document this condition as pathological fracture - lower leg. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pathological, stress and atypical fractures, sequela.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Pathological fracture - lower leg
- Pathological fracture of fibula
- Pathological fracture of tibia
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Fractures
A fracture is a break in a bone. Fractures are usually caused by injuries. Since they can sometimes be serious, it's important to get medical care right away if you think you have a fracture.
The full article covers:
- What is a fracture?
- What are the different types of fractures?
- What causes fractures?
- What are the symptoms of a fracture?
- How are fractures diagnosed?
- What are the treatments for fractures?
- Can fractures be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M84.469S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M84.469SOverview
Is M84.469S (Pathological fracture, unspecified tibia and fibula) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report pathological fracture, unspecified tibia and fibula, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in M84.469S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the pathological fracture, unspecified tibia and fibula itself has resolved, not the original event.
What MS-DRG does M84.469S group to?
When pathological fracture, unspecified tibia and fibula, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 559, 560, 561, with relative weights from 0.8039 to 1.8649 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M84.469S?
Under the General Equivalence Mappings, pathological fracture, unspecified tibia and fibula, sequela converts to ICD-9-CM 905.4 (late effect leg fx). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
