In medical coding, understanding detailed clinical scenarios like epidural steroid injections is crucial for accurate documentation and billing. This ambulatory case involves an 18-year-old female patient diagnosed with low back pain and lumbar radiculopathy complicated by chronic pain syndrome. The patient's history indicates she received an epidural approximately three weeks prior with about 30% improvement, leading to an additional epidural steroid injection under C-arm guidance. The procedure involves a caudal approach and epidurogram, where the patient is placed in a prone position under monitored anesthesia care (MAC). Local anesthesia using 1% lidocaine with a #23-gauge needle is administered to numb the skin and surrounding areas before the injection. This detailed clinical information is vital for medical coders to assign precise codes under ICD-10 and CPT systems, reflecting both diagnosis and procedure accurately. Knowing such granular details helps medical coding professionals avoid errors that could lead to claim denials or improper reimbursements. Furthermore, awareness of terms like 'ambulatory case,' 'epidural steroid injection,' 'C-arm guidance,' and anesthesia types improves coding accuracy, aligning with healthcare payer requirements. For those preparing for the Certified Coding Specialist (CCS) exam or advancing in a medical coding career, reviewing real-world scenarios like this enhances practical understanding and confidence. Moreover, pairing theoretical knowledge with case studies supports skills in identifying coding pitfalls and applying the latest coding guidelines. Engaging with these medical scenarios not only sharpens coding expertise but also contributes to improved patient care documentation, ensuring that clinical nuances are captured properly for treatment tracking and healthcare analytics. Sharing such experiences within medical coding communities encourages collaborative learning and continuous professional development in this dynamic field.