M84.521K – Pathological fracture in neoplastic disease, right humerus, subsequent encounter for fracture with nonunion
ICD-10-CM 2027 diagnosis code · Disorders of bone density and structure
- Code
M84.521K(claims format:M84521K)- Description
- Pathological fracture in neoplastic disease, right humerus, subsequent encounter for fracture with nonunion
- Short description
- Path fx in neopltc dis, r humerus, subs for fx w nonunion
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M80-M85 Disorders of bone density and structure
- Parent codes
- M84 › M84.5 › M84.52 › M84.521
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care.
| Character | Meaning |
|---|---|
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 |
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M84 – Disorder of continuity of bone
- traumatic fracture of bone-see fracture, by site
M84.5 – Pathological fracture in neoplastic disease
- underlying neoplasm
- The appropriate 7th character is to be added to each code from subcategory M84.5:
Related codes in M84.521
- M84.521A – Pathological fracture in neoplastic disease, right humerus, initial encounter for fractureBillable
- M84.521D – Pathological fracture in neoplastic disease, right humerus, subsequent encounter for fracture with routine healingBillable
- M84.521G – Pathological fracture in neoplastic disease, right humerus, subsequent encounter for fracture with delayed healingBillable
- M84.521P – Pathological fracture in neoplastic disease, right humerus, subsequent encounter for fracture with malunionBillable
- M84.521S – Pathological fracture in neoplastic disease, right humerus, sequelaBillable
Frequently asked questions
What is ICD-10 code M84.521K?
M84.521K is the ICD-10-CM code for pathological fracture in neoplastic disease, right humerus, subsequent encounter for fracture with nonunion, in the block M80-M85 (Disorders of bone density and structure).
Is M84.521K a billable code?
Yes. M84.521K is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M84.521K belong to?
It belongs to category M84 – Disorder of continuity of bone.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.