Thyroid, FNA Cytomorphology Evaluation

Test Code
90819


CPT Codes
88173

Includes
If indicated, one or more of the following tests could be added at an additional charge:

Level IV, Surgical Pathology (CPT Code(s): 88305)
Histopathology Special Stains-Miscellaneous (CPT Code(s): 88313)

Immunostain(s) (CPT Code(s): 88342 for each), most common are:
Calcitonin, IHC with Interpretation
CD20, IHC with Interpretation
CD3, IHC with Interpretation
PTH, IHC with Interpretation
Thyroid Transcription Factor-1, IHC with Interpretation
Thyroglobulin, IHC with Interpretation


Preferred Specimen
Needle washings, in alcohol-based preservative (e.g., CytoLyt®), collected in a plastic, leak-proof container and 4 unstained, fixed or air-dried slides of needle washings, submitted in a slide container


Instructions
Do not reject.
Express a small portion of the FNA from needle directly onto glass slides and air dry or fix immediately by immersing in alcohol or by fixing with a commercially prepared cytology spray fixative. Label each slide with patient's name, pathology sample ID, and the number of needle pass (i.e., 1 for 1st, 2 for 2nd, etc). The needle should then be washed in a screw-capped vial of alcohol-based fixative (e.g., CytoLyt®) and labeled with patient's name, pathology sample ID, and FNA location. FNAs from different locations (e.g., distinct nodules) should be collected individually on different slides and needle washings (e.g., A-left lobe, B-right lobe).


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 30 days
Refrigerated: 30 days
Frozen: Unacceptable


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Broken slides beyond repair • Unlabeled container or slide • Leakage of fluid during transport • Mismatch between name of patient on slide and name on requisition • Received frozen


Methodology
Cytomorphology Review

Setup Schedule
Set up: Mon-Sat; Report availble: 2-4 days


Reference Range
See Laboratory Report


Clinical Significance
Thyroid masses are evaluated by fine needle aspiration (FNA). This assay will provide cytologic evaluation and diagnosis of thyroid FNAs by a cytopathologist.


Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.