DU20DZZ
Stereotactic Radiosurgery Ovary to None with None, Stereotactic Other Photon Radiosurgery Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | D Radiation Therapy |
| Body System | U Female Reproductive System |
| Operation | 2 Stereotactic Radiosurgery |
| Body Part | 0 Ovary |
| Approach | D Stereotactic Other Photon 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
Ovary
Stereotactic radiosurgery on the ovary applies a single, precisely targeted high dose using image guidance, an approach chosen when a discrete ovarian mass or oligometastatic lesion can be clearly delineated from surrounding bowel, bladder, and vasculature. Because the ovary is small and can shift position between imaging and treatment, accurate immobilization and real-time tracking are essential to avoid missing the target or irradiating adjacent structures. This modality is typically considered for patients who are not surgical candidates or who have limited, localized disease where a single ablative session offers control without the cumulative toxicity of a fractionated course. Documentation should confirm single-session stereotactic delivery to distinguish it clearly from standard beam radiation given over multiple fractions.
Modality Qualifier: Stereotactic Other Photon Radiosurgery
Stereotactic Other Photon Radiosurgery captures highly focused, single- or few-fraction photon radiosurgery delivered by systems other than dedicated gamma-emitting units, such as linear-accelerator-based platforms, using precise stereotactic targeting to ablate small, well-defined lesions. It is distinguished from Stereotactic Gamma Beam Radiosurgery, which specifically uses cobalt-60 gamma sources, and from Stereotactic Particulate Radiosurgery, which relies on charged particle beams rather than photons.
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.