M19
Non-billableOther and unspecified osteoarthritis
M19 is the ICD-10-CM code for Other and unspecified osteoarthritis. It is a non-billable category code — use a more specific child code such as M19.0 for billing.
- Status
- Header (non-billable)
- Chapter
- M00-M99
- Subcodes
- 4
- Edition
- FY2026
M00-M99 Diseases of the musculoskeletal system and connective tissue
What this means — in plain language
MedlinePlus · NIHWhat is osteoarthritis? Osteoarthritis, sometimes called OA, is a type of arthritis that only affects the joints, usually in the hands, knees, hips, neck, and lower back. It's the most common type of arthritis. In a healthy joint, the ends of the bones are covered with a smooth, slippery tissue called cartilage. The cartilage pads the bones and helps them glide easily when you move the joint. With osteoarthritis,…
Read more about Osteoarthritis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
- •polyarthritis (M15.-)
Excludes2 — not included here
Frequently asked questions
- What is ICD-10 code M19?
- M19 is the ICD-10-CM code for "Other and unspecified osteoarthritis". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
- Is M19 a billable code?
- No — M19 is a non-billable header code. Use a more specific child code (such as M19.0) for billing.
- What is excluded from M19?
- Excludes1 (not coded here): polyarthritis (M15.-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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