Q83.9
ICD-10-CMThis code signifies an uncharacterized birth defect affecting the breast tissue. It is used when a congenital anomaly of the breast is present, but its specific type or nature (e.g., amastia, polymastia, hypoplasia) is not documented or determined. This represents a general congenital structural abnormality of the breast.
Apply this code when medical record documentation confirms a congenital malformation of the breast, but lacks further specificity regarding the exact type of anomaly. This is appropriate when the provider's diagnosis states "congenital breast malformation, unspecified" or similar vague terminology. It should be used when more specific codes for congenital breast anomalies cannot be assigned due to insufficient detail.
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