M89.321 – Hypertrophy of bone, right humerus
ICD-10-CM 2027 diagnosis code · Other osteopathies
ICD-10-CM code
M89.321
- Code
M89.321(claims format:M89321)- Description
- Hypertrophy of bone, right humerus
- 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
- M86-M90 Other osteopathies
- Parent codes
- M89 › M89.3 › M89.32
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block M86-M90
Excludes1 (not coded here):
- postprocedural osteopathies (M96.-)
Related codes in M89.32
Frequently asked questions
What is ICD-10 code M89.321?
M89.321 is the ICD-10-CM code for hypertrophy of bone, right humerus, in the block M86-M90 (Other osteopathies).
Is M89.321 a billable code?
Yes. M89.321 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M89.321 belong to?
It belongs to category M89 – Other disorders 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.