| 59 | Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)… | - Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a… |
| 76 | Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or… | - Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the… |
| 77 | Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition… | - Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently… |
| P1 | Modifier P1 indicates an ASA Physical Status I — a normal healthy patient — and is appended to anesthesia CPT codes (00100–01999) based on the anesthesiologist’s clinical assessment. It documents the… | - When to apply: Use modifier P1 on anesthesia CPT codes (00100–01999) when the anesthesia provider assigns ASA Physical Status I — a normal healthy patient (non‑smoker, minimal or no alcohol use).… |
| 51 | Modifier –51 (Multiple Procedures) is used when the same provider performs multiple procedures in the same session to identify secondary, non‑exempt procedures and indicate payment reduction logic… | - Use modifier -51 when the same provider performs multiple distinct procedures during the same patient encounter: report the highest‑valued procedure first (no modifier) and append -51 to… |