DU22HZZ
Stereotactic Radiosurgery Uterus to None with None, Stereotactic Particulate Radiosurgery Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | D Radiation Therapy |
| Body System | U Female Reproductive System |
| Operation | 2 Stereotactic Radiosurgery |
| Body Part | 2 Uterus |
| Approach | H Stereotactic Particulate Radiosurgery |
| Device | Z None |
| Qualifier | Z None |
Procedure Overview
Stereotactic radiosurgery of the female reproductive system delivers a small number of very precisely aimed, high-dose radiation beams to a tumor in the uterus, cervix, ovary, vagina, or vulva, converging from many angles so the dose concentrates on the target while sparing the bladder, rectum, and bowel nearby. Despite the name, no incision is made; imaging guidance and immobilization devices keep the beams locked onto the tumor across one to five sessions. It is used for tumors that are small, well-defined, and located where conventional fractionated radiation or surgery would carry too much risk to surrounding organs, or as a boost after other treatment, or for recurrences in a previously irradiated area. It can also treat isolated metastases from a gynecologic cancer, such as a solitary lymph node or lung nodule.
Because it is delivered in so few sessions, patients typically complete treatment within a week or two, though planning imaging and simulation happen beforehand.
Anatomy & Axis Detail
Uterus
Stereotactic radiosurgery to the uterus delivers a single concentrated dose to a clearly defined target within the uterine body, an approach considered for a discrete recurrent or residual mass, such as localized endometrial carcinoma, in patients for whom surgery or a fractionated course is not appropriate. Because the uterus moves with bladder and rectal filling and varies in size and shape between patients, treatment requires careful daily imaging or real-time tracking to ensure the high single dose lands accurately on the target and spares surrounding bowel and bladder tissue. This modality is distinguished from beam radiation by its single-session, ablative intent and from brachytherapy by its external, image-guided delivery rather than intracavitary source placement.
Modality Qualifier: Stereotactic Particulate Radiosurgery
Stereotactic Particulate Radiosurgery refers to single- or limited-fraction radiosurgical treatment delivered with charged particle beams, such as protons, using stereotactic targeting to achieve sharp dose falloff around a small lesion. Its particle physics gives it a different depth-dose profile than the photon-based stereotactic techniques, making it useful when sparing tissue just beyond the target is a priority, unlike Stereotactic Other Photon Radiosurgery or Gamma Beam approaches.
Coding & Documentation
Assignment depends on the operative and radiation oncology notes explicitly documenting stereotactic technique (e.g., SBRT, CyberKnife, Gamma Knife-style delivery) rather than assuming it from a short course of treatment alone; conventional hypofractionated external beam is coded differently even if the number of fractions is low. The coder needs the specific body part treated (uterus, cervix, ovary, vagina) drawn from the treatment plan, since the root operation stays the same but the body part value changes. A common error is defaulting to a generic "cervix" or "uterus" code when the target is actually a nodal or extrapelvic metastasis, which requires a different body system value. Another frequent miss is coding beam radiation when the dosimetry report and physician documentation clearly describe multi-arc stereotactic delivery.