---
kind: "section"
citation: "42 C.F.R. § 512.240"
title: "42"
number: "512.240"
heading: "Included modalities."
url: "https://uscodex.org/cfr/42/512.240"
---

# §512.240. Included modalities.


The modalities included in the RO Model are 3-dimensional conformal RT (3DCRT), intensity-modulated RT (IMRT), stereotactic radiosurgery (SRS), stereotactic body RT (SBRT), proton beam therapy (PBT), and image-guided radiation therapy (IGRT).


## Notes

### Amendments

[86 FR 63996, Nov. 16, 2021]

### Authority

Authority: 42 U.S.C. 1302, 1315a, and 1395hh.

### Source

Source: 85 FR 61362, Sept. 29, 2020, unless otherwise noted.

### Amendments

[86 FR 63996, Nov. 16, 2021]