glutathione mode of action Glutathione! Intravenous glutathione for skin lightening:

Skin Rejuvenation and Anti-Aging Protocol Dose: 1 to 2 mg per day Route: Subcutaneous (abdomen, thigh, or upper arm) Frequency: Daily, 5 days on, 2 days off Cycle: 8 to 12 weeks on, 4 weeks off Expected results: 4 to 8 weeks for visible improvement Best for: Fine lines, skin elasticity, skin density, overall skin quality In a 12-week facial cream study (human trial, 71 women), 70% showed increased collagen production with GHK-Cu, compared to 50% with vitamin C and 40% with retinoic acid (Pickart et al., 2015)

Bai J, Tian Y, Lu Y, Chen Y, Yu M, Gao X

Phytotherapy Research, 9 (2), 110-113

Some commenters also pointed out that assigning CPT code 61891 to APC 5465 is consistent with the APC assignment for the predecessor CPT code 61886Insertion or replacement of cranial neurostimulator pulse generator or receiver, direct or inductive coupling