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| Short Descr | ONC BRST CA DNA PIK3CA GENE | Medium Descr | ONC BRST CA DNA PIK3CA GENE ALYS BRST TUM TISS | Long Descr | Oncology (breast cancer), DNA, PIK3CA (phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha) (eg, breast cancer) gene analysis (ie, p.C420R, p.E542K, p.E545A, p.E545D [g.1635G>T only], p.E545G, p.E545K, p.Q546E, p.Q546R, p.H1047L, p.H1047R, p.H1047Y), utilizing formalin-fixed paraffin-embedded breast tumor tissue, reported as PIK3CA gene mutation status | 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 | Note | Grammar correction |
| 2021-01-01 | Added | First appearance in code book. |
| 2021-01-01 | Changed | First appearance of change in code book. |
| 2020-04-01 | Changed | Medium and long descriptions changed. |
| 2020-01-01 | Added | Code added. |
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