Why does my pharmacy need prior authorization from my insurance for GLP-1s?

Prior authorization (PA) is a cost-control process insurance companies use for expensive medications like GLP-1s. Insurers require PA to verify you meet their specific criteria before they'll cover the medication. Common PA requirements include: BMI documentation (usually 30+ or 27+ with comorbidities), documented weight-related health conditions with diagnosis codes, proof of previous weight management attempts (3-6 months of documented efforts), step therapy requirements (trying other treatments first), and prescriber attestation that medication is medically necessary. The PA process involves your prescriber submitting forms and documentation to your insurance, which can take 3-14 business days for approval. Denials can be appealed with additional documentation. PA requirements vary dramatically between insurance plans - some approve easily, others deny routinely. PA usually needs renewal annually or when changing doses. Your pharmacy typically initiates the PA process when they receive the prescription, but having your prescriber submit proactively speeds approval.