M84.750
Atypical femoral fracture, unspecified
Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 9 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 11 never code together
M84code
Excludes2
- traumatic fracture of bone-see fracture, by site
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 6
A initial encounter for fracture
D subsequent encounter for fracture with routine healing
G subsequent encounter for fracture with delayed healing
K subsequent encounter for fracture with nonunion
P subsequent encounter for fracture with malunion
S sequela
Instructional notes 1
M00-M99chapter
Notes
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Index entries leading here 1
- Fracture, nontraumatic, NEC
- atypical
- femur M84.750
- atypical
Alongside this code 9 same parent — M84.75
M84.751 Incomplete atypical femoral fracture, right leg category M84.752 Incomplete atypical femoral fracture, left leg category M84.753 Incomplete atypical femoral fracture, unspecified leg category M84.754 Complete transverse atypical femoral fracture, right leg category M84.755 Complete transverse atypical femoral fracture, left leg category M84.756 Complete transverse atypical femoral fracture, unsp leg category M84.757 Complete oblique atypical femoral fracture, right leg category M84.758 Complete oblique atypical femoral fracture, left leg category M84.759 Complete oblique atypical femoral fracture, unspecified leg category
Subordinate codes 6
M84.750A Atypical femoral fracture, unspecified, init M84.750D Atypical femoral fracture, unspecified, 7thD M84.750G Atypical femoral fracture, unspecified, 7thG M84.750K Atypical femoral fracture, unspecified, 7thK M84.750P Atypical femoral fracture, unspecified, 7thP M84.750S Atypical femoral fracture, unspecified, sequela
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.