M13

Non-billable

Other arthritis

M13 is the ICD-10-CM code for Other arthritis. It is a non-billable category code — use a more specific child code such as M13.0 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Subcodes
3
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Excludes1 — not coded here

Frequently asked questions

What is ICD-10 code M13?
M13 is the ICD-10-CM code for "Other arthritis". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M13 a billable code?
No — M13 is a non-billable header code. Use a more specific child code (such as M13.0) for billing.
What are the subcodes of M13?
M13 has 3 more specific child codes, including M13.0, M13.1, M13.8.
What is excluded from M13?
Excludes1 (not coded here): arthrosis (M15-M19); osteoarthritis (M15-M19).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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