Could someone please help me with this? The pathology report supports ONE specimen. The report states "IHC stains are performed with appropriate controls & reveal strong & diffuse positivity for CK5/6, CALRETININ, & WT-1 (Nuclear). Focal positive staining is seen for CK 7, MOC31, & BEREP4. The tumor cells are negative for TTF-1, NAPSIN-A, CEA & CDX-2." The provider is billing CPT 88342-26 (4 units) and CPT 88344-26 (3 units) for the IHC staining. This doesn't seem correct to me.