M21.821
ICD-10-CMThis code signifies an acquired, non-congenital structural abnormality of the right upper arm that doesn't fit into more specific deformity categories. These deformities result from various causes such as trauma, disease processes, or iatrogenic factors, leading to an altered shape or alignment of the humerus or surrounding soft tissues.
Apply this code when documentation specifies an acquired deformity of the right upper arm that is not otherwise classified (e.g., not a clubhand, clawhand, or other explicitly defined deformity). Examples include post-traumatic bone malunion, significant soft tissue contractures, or other structural changes impacting the right upper arm's normal anatomy. Ensure the medical record clearly states "right upper arm" and describes the acquired nature of the deformity.
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