Need help choosing the right code?
Ask CasePilot about procedures, modifiers, bundling, and coding guidance.
Try CasePilot© Copyright 2026 American Medical Association. All rights reserved.
| Short Descr | BETA AMYL Aβ40&Aβ42 LC-MS/MS | Medium Descr | BETA AMYLOID Aβ40&Aβ42 LC-MS/MS RATIO PLASMA | Long Descr | Beta amyloid, Aβ40 and Aβ42 by liquid chromatography with tandem mass spectrometry (LC-MS/MS), ratio, plasma | CLIA Waived (QW) | No | APC Status Indicator | Conditionally packaged laboratory tests | Berenson-Eggers TOS (BETOS) | none | MUE | Not applicable/unspecified. |
| 90 | Reference (outside) laboratory: when laboratory procedures are performed by a party other than the treating or reporting physician or other qualified health care professional, the procedure may be identified by adding modifier 90 to the usual procedure number. | AY | Item or service furnished to an esrd patient that is not for the treatment of esrd | GW | Service not related to the hospice patient's terminal condition | GY | Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit |
|
Date
|
Action
|
Notes
|
|---|---|---|
| 2026-01-01 | Deleted | First appearance of deletion in codebook. |
| 2024-12-31 | Deleted | Code Deleted. |
| 2023-01-01 | Added | First appearance in codebook. |
| 2022-10-01 | Added | Code added. |
Get instant expert-level medical coding assistance.