M84.750K Atypical femoral fracture, unspecified, subsequent encounter for fracture with nonunion

Billable ICD-10-CM code, FY2026.

Built from M84.750 with 7th character K (subsequent encounter for fracture with nonunion).

Applies from M84 Disorder of continuity of bone

Excludes2 (not included here)

• traumatic fracture of bone-see fracture, by site

Applies from M84.75 Atypical femoral fracture

7th character note

• The appropriate 7th character is to be added to each code from M84.75:

7th character required

• 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

Diagnosis Index entries for M84.750K

• Fracture, nontraumatic, NEC › atypical › femur

Nearby codes

• M84.75 Atypical femoral fracture
• M84.750 Atypical femoral fracture, unspecified
• M84.750A Atypical femoral fracture, unspecified, initial encounter for fracture
• M84.750D Atypical femoral fracture, unspecified, subsequent encounter for fracture with routine healing
• M84.750G Atypical femoral fracture, unspecified, subsequent encounter for fracture with delayed healing
• M84.750K Atypical femoral fracture, unspecified, subsequent encounter for fracture with nonunion (this code)
• M84.750P Atypical femoral fracture, unspecified, subsequent encounter for fracture with malunion
• M84.750S Atypical femoral fracture, unspecified, sequela
• M84.751 Incomplete atypical femoral fracture, right leg
• M84.751A Incomplete atypical femoral fracture, right leg, initial encounter for fracture
• M84.751D Incomplete atypical femoral fracture, right leg, subsequent encounter for fracture with routine healing