2026 ICD-10-CM Diagnosis Code M84.48XKPathological fracture, other site, subsequent encounter for fracture with nonunion
M84.48XK is a billable ICD-10-CM diagnosis code for pathological fracture, other site, subsequent encounter for fracture with nonunion. The 7th character K reports a subsequent encounter for a fracture that has failed to heal, called a nonunion. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pathological fracture, subsequent encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Disorder of left patella
- Disorder of right patella
- Fracture of left patella
- Fracture of right patella
- Pathological fracture of cervical vertebra
- Pathological fracture of left half of mandible
- Pathological fracture of left hip
- Pathological fracture of left patella
- Pathological fracture of left rib
- Pathological fracture of lumbar vertebra
- Pathological fracture of mandible
- Pathological fracture of maxilla
- Pathological fracture of patella
- Pathological fracture of pelvis
- Pathological fracture of rib
- Pathological fracture of right half of mandible
- Pathological fracture of right patella
- Pathological fracture of right rib
- Pathological fracture of sacral vertebra
- Pathological fracture of thoracic vertebra
- Pathological fracture of vertebra
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 M84.48XK to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M84.48XKOverview
Is M84.48XK (Pathological fracture, other site) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report pathological fracture, other site, subsequent encounter for fracture with nonunion on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character K in M84.48XK mean?
The final character K reports a subsequent encounter where the pathological fracture, other site has failed to heal, called a nonunion.
What MS-DRG does M84.48XK group to?
When pathological fracture, other site, subsequent encounter for fracture with nonunion is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M84.48XK?
Under the General Equivalence Mappings, pathological fracture, other site, subsequent encounter for fracture with nonunion converts to ICD-9-CM 733.82 (nonunion of fracture). 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.
