| 25 | CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable… | - When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,… |
| P4 | Modifier P4 indicates the patient is ASA Physical Status IV — a patient with severe systemic disease that is a constant threat to life. It is assigned by the anesthesia provider and must be supported… | - When to apply: Use modifier P4 only on anesthesia CPT codes (00100–01999) to indicate ASA Physical Status IV — a patient with severe systemic disease that is a constant threat to life (examples:… |
| 47 | Modifier -47 (“Anesthesia by Surgeon”) is appended to a surgical or procedural CPT code when the surgeon personally provides regional or general anesthesia for the procedure. Use of -47 indicates the… | - Use modifier -47 when the surgeon personally provides regional or general anesthesia during the surgical procedure (i.e., the surgeon administers the anesthesia in addition to performing the… |
| 74 | Modifier ‑74 indicates an outpatient hospital or ASC procedure that was discontinued after anesthesia was administered and after the procedure had begun. Use this modifier when anesthesia (local,… | - Use modifier -74 when a procedure in an outpatient hospital or ASC setting is terminated after anesthesia has been administered and after the procedure has commenced (for example, after incision,… |
| 50 | Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add… | - Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same… |