M15.9
✓ Billable
Polyosteoarthritis, unspecified
ICD-10-CM · FY2026 · Diseases of the Musculoskeletal System and Connective Tissue
Code
M15.9
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Musculoskeletal System and Connective Tissue
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code M15.9?
ICD-10-CM code M15.9 represents Polyosteoarthritis, unspecified. It is a billable diagnosis code in the Diseases of the Musculoskeletal System and Connective Tissue chapter, effective October 1, 2025 – September 30, 2026.
Is M15.9 billable?
Yes. M15.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is M15.9 in?
M15.9 belongs to the Diseases of the Musculoskeletal System and Connective Tissue chapter (M00–M99) of ICD-10-CM.
Related codes in the M15 category
M15
Polyosteoarthritis
Non-billable
M15.0
Primary generalized (osteo)arthritis
Billable
M15.1
Heberden's nodes (with arthropathy)
Billable
M15.2
Bouchard's nodes (with arthropathy)
Billable
M15.3
Secondary multiple arthritis
Billable
M15.4
Erosive (osteo)arthritis
Billable
M15.8
Other polyosteoarthritis
Billable
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