2026 ICD-10-CM Diagnosis Code M84.353GStress fracture, unspecified femur, subsequent encounter for fracture with delayed healing
M84.353G is a billable ICD-10-CM diagnosis code for stress fracture, unspecified femur, subsequent encounter for fracture with delayed healing. The 7th character G reports a subsequent encounter for a fracture that is healing more slowly than expected. 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 atypical fracture of femur. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Stress fracture, subsequent encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Atypical fracture of femur
- Insufficiency fracture
- Stress fracture of bone of knee
- Stress fracture of femur
- Stress fracture of lateral condyle of femur
- Stress fracture of neck of femur
- Stress fracture of shaft of femur
- Subchondral insufficiency fracture of condyle of femur
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 M84.353G to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M84.353GOverview
Is M84.353G (Stress fracture, unspecified femur) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report stress fracture, unspecified femur, subsequent encounter for fracture with delayed healing on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character G in M84.353G mean?
The final character G reports a subsequent encounter where the stress fracture, unspecified femur is healing more slowly than expected.
What MS-DRG does M84.353G group to?
When stress fracture, unspecified femur, subsequent encounter for fracture with delayed healing 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 M84.353G?
Under the General Equivalence Mappings, stress fracture, unspecified femur, subsequent encounter for fracture with delayed healing converts to ICD-9-CM V54.25 (aftrcare path fx up leg). 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.
