Mammographic fibroglandular density, left breast

This code signifies the finding of dense fibroglandular tissue in the left breast as identified on a mammogram. This density can obscure underlying lesions and is a recognized factor influencing mammographic interpretation and breast cancer risk assessment. It is a radiological finding, not a diagnosis of a specific disease.

Apply this code when mammography reports specifically document increased fibroglandular density in the left breast. This finding is often noted in screening or diagnostic mammograms and may prompt further imaging or closer surveillance. Documentation should clearly state "dense fibroglandular tissue" or similar terminology for the left breast.

• Ensure the laterality (left breast) is explicitly documented in the radiology report.
• Do not use this code if the density is described as a specific mass or lesion; use codes for those findings instead.
• This code is often reported as a secondary diagnosis, supporting the medical necessity for further imaging or screening.