This policy references a broad literature base that supports the clinical evaluation and operative management of gynecomastia, including guideline-like resources and multiple surgical series. Key sources cited include society guidance (American Society of Plastic Surgeons), specialty reviews and systematic reviews, and clinical references such as the Endocrine Society, Mayo Clinic, and UpToDate, which provide context on diagnosis, grading, and nonoperative management.
Surgical technique literature cited in the policy covers a range of approaches used to treat gynecomastia: skin-sparing mastectomy with or without liposuction, mastectomy with skin reduction, subcutaneous mastectomy and reduction mammoplasty, as well as adjunctive methods such as suction-assisted and ultrasound-assisted liposuction and combined pull-through techniques. Systematic reviews and comparative series note that combined excision plus aspiration techniques may reduce complication rates compared with excision alone, but also emphasize heterogeneity in surgical classification and technique across studies.
Complication data from the cited reviews include reported ranges for major complications (0% to 33%) and common events such as hematoma (approximately 5.8%) and seroma (approximately 2.4%); use of drains and the distribution of higher-grade gynecomastia cases influences observed complication rates. The literature also highlights that liposuction alone removes adipose but not glandular tissue and therefore is not sufficient as a sole treatment for true gynecomastia.
The references further describe evaluation and management considerations: physical exam and imaging (mammography/ultrasound) to confirm glandular tissue, use of hormone testing to exclude treatable endocrine causes, and the role of medical therapy primarily in the proliferative phase. The policy cites these clinical sources to justify criteria that require documentation of true (glandular) gynecomastia, grading severity, exclusion or treatment of hormonal or drug-induced causes, and persistence of symptoms before surgical intervention.
Finally, the policy underwent routine annual review with no changes to clinical policy statements, and the reference list (including multiple surgical studies and reviews) supports the policy’s assessments of indications, techniques, and complication profiles used to inform coverage guidance.