07DL8ZX
Extraction Cisterna Chyli to Diagnostic with No Device, Via Natural or Artificial Opening Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 7 Lymphatic and Hemic Systems |
| Operation | D Extraction |
| Body Part | L Cisterna Chyli |
| Approach | 8 Via Natural or Artificial Opening Endoscopic |
| Device | Z No Device |
| Qualifier | X Diagnostic |
Operation Definition
Pulling or stripping out or off all or a portion of a body part by the use of force
Procedure Overview
Extraction in this body system almost always refers to bone marrow procedures - pulling out marrow tissue using a needle and manual force rather than a cutting instrument. A physician advances a needle into the marrow cavity, usually at the posterior iliac crest, and withdraws either a liquid marrow sample by aspiration or a solid core sample by twisting and pulling the needle free.
These procedures are performed to evaluate blood cell production when someone has unexplained anemia, abnormal blood counts, a suspected blood cancer, or to stage lymphoma. The same technique, at larger volume, is used to harvest marrow for a stem cell or bone marrow transplant, where the marrow is collected from a donor rather than for diagnosis.
Because the tissue is pulled or stripped out by force rather than sliced away, this family sits apart from ordinary biopsy techniques used on solid organs, even though the clinical intent, sampling tissue for evaluation, is similar.
Anatomy & Axis Detail
Cisterna Chyli
The cisterna chyli is a small, saclike dilation of the lymphatic system located in the retroperitoneum near the first or second lumbar vertebra, where lymph from the abdomen, pelvis, and lower limbs collects before ascending as the thoracic duct. Because it sits deep behind the aorta and near major vessels, extraction of tissue or fluid debris from this structure is technically demanding and rarely performed, generally reserved for specialized interventional procedures addressing chylous ascites or a lymphatic leak traced to this junction point. The approach is typically percutaneous and imaging-guided given the depth and proximity to vascular structures. Documentation of this body part is notable because the cisterna chyli, unlike most lymphatic sites, has no laterality distinction.
Approach: Via Natural or Artificial Opening Endoscopic
Via Natural or Artificial Opening Endoscopic describes instrumentation introduced through a natural orifice or a surgically created opening while using an endoscope for visualization, as in a routine colonoscopy performed through the anus. It differs from the plain Via Natural or Artificial Opening value by the added scope, and from Percutaneous Endoscopic by using an existing passage rather than a new skin puncture.
Qualifier: Diagnostic
Applied chiefly to Excision, this qualifier marks that tissue was removed specifically for diagnostic purposes, i.e., a biopsy intended for pathologic evaluation rather than to treat disease. It distinguishes biopsy-type excisions from therapeutic excisions of the same body part, which are coded without this qualifier even though the physical technique may be identical.
Coding & Documentation
Coders need documentation specifying whether the procedure was a marrow aspiration (liquid marrow withdrawn by syringe), a core biopsy (a solid cylinder of marrow pulled out with a biopsy needle), or both, since both are captured under Extraction but the approach and diagnostic qualifier may differ. The note should confirm the bone marrow was the target, not a separate skeletal structure, since a bone biopsy with marrow incidentally obtained is coded differently.
A common mistake is defaulting to Excision because the word "biopsy" appears in the note; bone marrow biopsy is Extraction by PCS definition regardless of that word choice. Another error is failing to separately code an aspiration and a core biopsy performed at the same session through two separate needle passes, when guidelines call for capturing both.