Serum Magnesium
JE · Effective Mar 13, 2017
3 active Medicare policies list O20.0, and 4 commercial payer policies list it. See each policy's status for the code and its official source. Listing a code is not a coverage decision: read each policy’s source for the requirements that apply.
Free account. Policy pages stay open to everyone.
JE · Effective Mar 13, 2017
JF · Effective Mar 13, 2017
National · Effective Oct 16, 2025
4 policies from 1 payer
Summary of the payer’s published policy. Not a coverage determination — confirm with the payer before submitting.
| Policy | Effective | Status of O20.0 |
|---|---|---|
| Human Chorionic Gonadotropin Testing | Apr 15, 2026 | Covered |
| Maternity Ultrasound in the Outpatient Setting | Jan 6, 2026 | Covered |
| Thyroid Testing | Apr 15, 2026 | Covered |
| Use of 3-D, 4-D or 5-D Ultrasound in Maternity Care | Apr 15, 2026 | Not covered |