M24.6
Non-billableAnkylosis of joint
M24.6 is the ICD-10-CM code for Ankylosis of joint. It is a non-billable category code — use a more specific child code such as M24.60 for billing.
M00-M99 Diseases of the musculoskeletal system and connective tissue
Excludes1 — not coded here
- •stiffness of joint without ankylosis (M25.6-)
Excludes2 — not included here
- •spine (M43.2-)
Frequently asked questions
- What is ICD-10 code M24.6?
- M24.6 is the ICD-10-CM code for "Ankylosis of joint". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
- Is M24.6 a billable code?
- No — M24.6 is a non-billable header code. Use a more specific child code (such as M24.60) for billing.
- What are the subcodes of M24.6?
- M24.6 has 9 more specific child codes, including M24.60, M24.61, M24.62.
- What is excluded from M24.6?
- Excludes1 (not coded here): stiffness of joint without ankylosis (M25.6-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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