What is the appropriate code for gross and microscopic examination of breast tissue following a simple mastectomy?

The appropriate code for the gross and microscopic examination of breast tissue following a simple mastectomy is founded on the level of examination performed. In this context, the code 88307 signifies a detailed examination of surgical pathology specimens. This includes the interpretation of both gross and microscopic findings, which is the standard for assessing tissue from a mastectomy where thorough evaluation is crucial to determine any potential disease presence or margins.

The choice of using 88307 is based on the fact that it perfectly aligns with the requirement for a comprehensive assessment following a surgical procedure like a mastectomy—substantially more involved than simpler evaluation processes, which is why lesser codes would not apply here. Specifically, this code is applicable for services that include the interpretation and reporting based on complex examination standards, thereby justifying its selection in cases where significant pathology is involved, such as breast tissue analysis post-surgery.

This choice is motivated by the necessity of proper diagnosis and management in cases of breast cancer, underpinning the importance of detailed tissue examination.