## What is procedure code 77300?

IMRT Dosimetry CPT code 77300 basic radiation dosimetry calculation, central axis depth dose calculation, TDF, NDS, gap calculation, off axis factor, tissue inhomogeneity factors, calculation of non- ionizing radiation surface and depth dose, as required during course of treatment, only when prescribed by the treating …

## What is the standard measure of energy in radiation treatment?

The radiation dose absorbed by a person (that is, the amount of energy deposited in human tissue by radiation) is measured using the conventional unit rad or the SI unit gray (Gy).

**What is the standard measure of energy in Radiation Treatment?**

**What units is radiation measured in?**

The units of measurement for radioactivity are the becquerel (Bq, international unit) and the curie (Ci, U.S. unit). Exposure describes the amount of radiation traveling through the air.

### What meter measures radiation?

Geiger counters are commonly used to measure the amount of radioactivity, but there are other types of detectors that may be used.

### Can 77387 be billed alone?

CPT code 77387 has both a professional component (PC) and a technical component (TC). The TC of 77387 is not reimbursed separately in the hospital setting because it is packaged into the Ambulatory Payment Classification (APC) with the treatment delivery service with which it is performed.

**What is the CPT code for 77300?**

The work of 77300 is already captured in the planning code (77321). If a particle beam is planned for delivery without an isodose plan (77321, 77306 or 77307), then CPT code 77300 can still be reported.

**What are the units of 77300 charged in IMRT?**

Therefore, the units of 77300 charged would correspond to the number of gantry angles in the IMRT plan, frequently up to 10 units.

#### How many charges of 77300 are in an arc plan?

Typically, one unit of 77300 can be charged per arc. Therefore, there are one to three charges of 77300 for a typical arc plan. In “step and shoot” or compensator based IMRT treatment courses, one unit of 77300 can be charged per angle.

#### Can CPT code 77300 be used for particle beam work?

The work of 77300 is already captured in the planning code (77321). If a particle beam is planned for delivery without an isodose plan (77321, 77306 or 77307), then CPT code 77300 can still be reported. If the particle beam plan rises to the level of 77295 or 77301, CPT code 77300 can be utilized.