Careful before you write off that procedure!
My org specializes in healthcare economics and reimbursement. We work with many folks who aren't always able to put their hands on available resources when needed. I've attached a document periodically published by Myers and Stauffer (CPAs who work and audit for CMS) that we use as a resource in managing fee schedules for our clients. Per MS, these procedures are considered "encounters". Depending on your offerings, some or all codes should be configured and managed as encounters in your EMR/PMS. They will need to be aligned with the encounter code for government payers and should not be forgotten when filing for the periodic wrap/supplemental payments from traditional Medicare and Medicaid based on your MCOs' reimbursement. These codes would be linked to commercial fee schedules as well.
For the procedures you're writing off, hopefully, your adjustment (write-off) codes have an actionable process flow that allows for optimal, financial reporting of your non-covered charges in accordance with your financial policies and guidelines.
Good luck...