M13.879
✓ Billable
Other specified arthritis, unspecified ankle and foot
ICD-10-CM · FY2026 · Diseases of the Musculoskeletal System and Connective Tissue
Code
M13.879
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 M13.879?
ICD-10-CM code M13.879 represents Other specified arthritis, unspecified ankle and foot. 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 M13.879 billable?
Yes. M13.879 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is M13.879 in?
M13.879 belongs to the Diseases of the Musculoskeletal System and Connective Tissue chapter (M00–M99) of ICD-10-CM.
Related codes in the M13 category
M13
Other arthritis
Non-billable
M13.0
Polyarthritis, unspecified
Billable
M13.1
Monoarthritis, not elsewhere classified
Non-billable
M13.8
Other specified arthritis
Non-billable
M13.10
Monoarthritis, not elsewhere classified, unspecified site
Billable
M13.11
Monoarthritis, not elsewhere classified, shoulder
Non-billable
M13.12
Monoarthritis, not elsewhere classified, elbow
Non-billable
M13.13
Monoarthritis, not elsewhere classified, wrist
Non-billable
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