HCPCS Code J3301: Injection, Triamcinolone Acetonide, Not Otherwise Specified, 10 mg

As with any injection, this will cause pain and discomfort in the injection site. It's possible for an injection site infection, and for the inflammation to flare up a bit (temporary). Rare complications include nerve damage, tendon ruptures, skin discoloration in the injection site, and (severe) allergic reactions. It's best to monitor the patient after injecting the drug.

Yes. It's sometimes called a Kenalog injection.

The injection of the drug could take up to 15 minutes. If you count consultation time and post-injection monitoring, this could take up to an hour.