Prolonged Services (99417 / G2212 Units)
Prolonged Services (99417 / G2212 Units) - a deterministic tool in Sophie Well's Billing & Reimbursement group.
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What this is
Prolonged Services (99417 / G2212 Units) is one of 230 deterministic tools in Sophie Well's Billing & Reimbursement group. Prolonged Services (99417 / G2212 Units) - a deterministic tool in Sophie Well's Billing & Reimbursement group.
When to use it
Use this tool when you need a quick, citable reference. Every calculation runs entirely in your browser - no inputs leave your device, no account is required, no AI is involved. The site enforces a strict Content Security Policy and ships no analytics or third-party CDN.
References
AMA CPT 99417 (office/outpatient) and 99418 (inpatient/observation); CMS G2212 / G0316 for Medicare. The AMA add-on starts 15 min past the primary code minimum time, the Medicare add-on 15 min past its maximum -- a higher floor. Each unit = 15 min. CMS Pub. 100-04 Ch. 12. Read the source ↗
Worked example: Medicare 99205 at 90 minutes -> G2212 x1 (Medicare floor 89 min; the AMA 99417 floor is 75 min).
Sophie Well is a reference and educational tool. Not medical, legal, or financial advice. Does not replace clinician judgment, professional billing review, or legal counsel.