Comment by roseway4

I've seen really good results using BERT and other open-source models for matching symptoms / healthcare service names to CPT/HCPCS code descriptions. Even for specialized domains, some of the freely available models perform well for ANN search. While BERT may not be viewed as state-of-the-art, versions of it have relatively low memory requirements versus newer models which is nice if you're self-hosting and/or care about scalability.