M84.551K Pathological fracture in neoplastic disease, right femur, subsequent encounter for fracture with nonunion

Billable ICD-10-CM code, FY2026.

Built from M84.551 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 M84.5 Pathological fracture in neoplastic disease

Code also

• underlying neoplasm

7th character note

• The appropriate 7th character is to be added to each code from subcategory M84.5:

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

Code annotations containing back-references to M84.551K

Back-references to M84.5

• Type 1 Excludes: M84.4 Pathological fracture, not elsewhere classified ("pathological fracture in neoplastic disease (M84.5-)")

Nearby codes

• M84.550S Pathological fracture in neoplastic disease, pelvis, sequela
• M84.551 Pathological fracture in neoplastic disease, right femur
• M84.551A Pathological fracture in neoplastic disease, right femur, initial encounter for fracture
• M84.551D Pathological fracture in neoplastic disease, right femur, subsequent encounter for fracture with routine healing
• M84.551G Pathological fracture in neoplastic disease, right femur, subsequent encounter for fracture with delayed healing
• M84.551K Pathological fracture in neoplastic disease, right femur, subsequent encounter for fracture with nonunion (this code)
• M84.551P Pathological fracture in neoplastic disease, right femur, subsequent encounter for fracture with malunion
• M84.551S Pathological fracture in neoplastic disease, right femur, sequela
• M84.552 Pathological fracture in neoplastic disease, left femur
• M84.552A Pathological fracture in neoplastic disease, left femur, initial encounter for fracture
• M84.552D Pathological fracture in neoplastic disease, left femur, subsequent encounter for fracture with routine healing