M99.8

Non-billable

Other biomechanical lesions

M99.8 is the ICD-10-CM code for Other biomechanical lesions. It is a non-billable category code — use a more specific child code such as M99.80 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M99
Subcodes
10
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code M99.8?
M99.8 is the ICD-10-CM code for "Other biomechanical lesions". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M99.8 a billable code?
No — M99.8 is a non-billable header code. Use a more specific child code (such as M99.80) for billing.
What are the subcodes of M99.8?
M99.8 has 10 more specific child codes, including M99.80, M99.81, M99.82.

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

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