Patterns data available for NAICS code 621410 availability

Hello, I am working on a research project related to reproductive healthcare. I am particularly interested in patterns around places with NAICS codes 621410. I notice in the July release notes that NAICS code 621410 was updated to fix some data quality issues. However, when I search the dataset for this NAICS code, no results are returned. Is this data gap intentional to protect data privacy or am I perhaps searching improperly?