What CPT code would be most appropriate for billing of eosinophil count performed on urine or sputum specimens? CPT code 89190 , Nasal smear for eosinophils, is specific to eosinophil count from nasal smear; however, counts are often requested on fresh urine specimens and also on sputum specimens. CPT code 87205 , Smear, primary source with interpretation; Gram or Giemsa stain for bacteria, fungi, or cell types, represents Gram or Giemsa stain for cell types; however, the procedure for staining of urine samples uses Wright and Hansels stains. ...
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Article Overview
This short coding guidance article focuses on a specimen-specific billing question involving eosinophil count testing on urine and sputum samples. It compares a few CPT options, explains why the scenario does not map neatly to a single standard code, and notes the documentation typically associated with reporting an unlisted procedure code. The article is intended for coders and billing staff working with laboratory and pathology-related services.
Why This Topic Matters
Laboratory coding can depend on both the test performed and the specimen source, so unusual specimen combinations may require careful code selection and supporting documentation. This article helps readers understand the coding issue at a high level before reviewing the full guidance.
What You Will Learn
- How specimen source can affect CPT coding for eosinophil-related testing
- Why certain standard laboratory codes may not fully match a nonstandard testing scenario
- What general documentation considerations are associated with reporting an unlisted procedure code in this context
- How coding questions involving urine and sputum specimens are framed in laboratory billing
Who Should Read This
- Medical coders
- Billing staff
- Laboratory billing personnel
- Pathology and laboratory coders
Codes Discussed
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