Hello @Filipa Pereira
Welcome to the community.
You can find several posts on that topic by entering "jira cloud service management hipaa" into the search field at the top of this screen. Here is one with a very useful reply.
If you look at this page (which is mentioned in the post I provided)
...and expand the first question "Does Atlassian adhere to information security standards?" you will find a link in the answer for HIPAA/HITECH
If you access the "this page" reference
... you can find the answers you seek there and in the additional documents it references.
Based on those documents neither Jira Service Management in Cloud nor Data Center is not currently considered HIPAA compliant.