Coding Corner

Q. If we received two specimens (A and B) and performed 3 different IHC stains on block A1 and A2 and  two different IHC stains on block B1, how would we code for these stains?

A. For this scenario, report 88342x1 and 88341x2 for specimen A and 88342x1 and 88341x1 for specimen B.  IHC stains are no longer reported per block in 2016. 

CPT made the following changes in 2015:

• CPT code 88343 was deleted
• CPT codes 88341 and 88344 were added
• You now report 88342 for the initial IHC stain per specimen
• Code 88341 is considered an add-on code and is reported for each additional stain
• Code 88344 is to be coded for each multiplex stain procedure.

Q. Is a BAL specimen reported as 88108?
A. Not necessarily.  The correct code will depend on the method used to process the specimen.  Except for FNA's, this would be the case for all non-gyn cytology specimens such as fluids, washings or brushings.  So the correct code could be one of the following:

• 88104-Cytopathology, fluids, washings or brushings except cervical or vaginal; smears with interpretation
• 88106............simple filter with interpretation
• 88108............concentration technique, smears and interpretation
• 88112............selective cellular enhancement technique 

Be sure to document the method of preparation in the report to support your charge.