Other specified acquired deformities of left upper arm

This code signifies an acquired, non-congenital structural abnormality of the left upper arm that doesn't fit into more specific deformity categories. It covers a range of conditions such as post-traumatic malunion, chronic contractures, or other structural changes affecting the humerus or surrounding soft tissues of the left upper arm.

Use this code when documentation clearly indicates an acquired deformity of the left upper arm that is not congenital and is not classified by a more specific ICD-10-CM code. This typically applies to conditions resulting from injury, disease, or surgical intervention where the specific nature of the deformity is described but lacks a dedicated code. Documentation should specify "left upper arm" and the "acquired" nature of the deformity.

• Ensure the documentation explicitly states "left upper arm" and that the deformity is "acquired" rather than congenital.
• Always review for more specific codes within the M20-M21 series before defaulting to this "other specified" code.
• Confirm the deformity is not a transient condition but a structural change.