M21.8

Non-billable

Other specified acquired deformities of limbs

M21.8 is the ICD-10-CM code for Other specified acquired deformities of limbs. It is a non-billable category code — use a more specific child code such as M21.80 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M21
Subcodes
5
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Excludes2 — not included here

Frequently asked questions

What is ICD-10 code M21.8?
M21.8 is the ICD-10-CM code for "Other specified acquired deformities of limbs". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M21.8 a billable code?
No — M21.8 is a non-billable header code. Use a more specific child code (such as M21.80) for billing.
What are the subcodes of M21.8?
M21.8 has 5 more specific child codes, including M21.80, M21.82, M21.83.

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

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