Unspecified acquired deformity of unspecified forearm

This code signifies an acquired, non-congenital structural abnormality of the forearm, where the specific nature of the deformity (e.g., angulation, shortening, rotation) is not documented. It indicates a deviation from normal forearm anatomy that developed after birth, without further specification.

Use this code when documentation clearly states an acquired deformity of the forearm but lacks details regarding the specific type or cause of the deformity. This is appropriate when the provider has not specified whether the deformity is due to trauma, disease, or other factors, and the laterality (left or right) is also not documented.

• Avoid using this code if the specific type of deformity (e.g., valgus, varus, shortening) is known and documented; instead, use a more specific code from the M21.0-M21.8 series.
• Ensure documentation supports an "acquired" condition; do not use for congenital deformities (Q codes).
• Prioritize codes that specify laterality (left or right forearm) if available in the medical record.