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| Short Descr | TWN ZYG GEN SEQ ALYS CHRMS2 | Medium Descr | TWN ZYG GEN TRGT SEQ ALYS CHRMS2 FTL DNA MAT BLD | Long Descr | Twin zygosity, genomic-targeted sequence analysis of chromosome 2, using circulating cell-free fetal DNA in maternal blood | CLIA Waived (QW) | No | APC Status Indicator | Service Paid under Fee Schedule or Payment System other than OPPS | Berenson-Eggers TOS (BETOS) | none | MUE | 1 |
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| 2022-01-01 | Changed | Code description changed. |
| 2019-01-01 | Added | First appearance in code book. |
| 2018-07-01 | Added | Code added. |
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