CPT Modifier 76
Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional
Source: AMA CPT / CMS HCPCS Level II definitions. Maintained by the D3rx Clinical Billing Team.
What modifier 76 means
Modifier 76 indicates a procedure or service was repeated by the same provider after the original on the same day. Its purpose is to distinguish a genuine, medically necessary repeat from a duplicate claim so the second occurrence is not auto-denied.
When to use it
The same physician repeats a study or procedure later the same day — for example, a repeat chest X-ray after central-line placement, or a repeat EKG to assess a change in status.
Documentation checklist
The record should support every item below before you append modifier 76.
- The time of each occurrence of the service
- The clinical reason the procedure had to be repeated
- That the same provider performed both occurrences
Do NOT use modifier 76 when
- A different provider performed the repeat — use modifier 77
- The line is actually a duplicate, not a clinically repeated service
- The repeat is a staged or related procedure within a global period — use 58 or 78
Common denial reasons
- Denied as a duplicate when modifier 76 was omitted
- Medical necessity for the repeat not documented
- Number of repeated units exceeds the payer's frequency limit
How to appeal a modifier 76 denial
Submit timestamps for both occurrences and a note documenting why the repeat was medically necessary (e.g., to confirm line position or reassess a deteriorating patient). Make clear it is the same provider repeating the service, not a duplicate submission.
Payer notes
Modifier 76 overrides duplicate-claim edits; payers frequently want documentation of each occurrence and its time. Some payers cap how many times a service may be repeated in a day.
Related & commonly confused modifiers
Where modifier 76 is used
- Radiology (70450, 71046)
- EKG (93000, 93010)
- Diagnostic and bedside procedures
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Medical billing disclaimer
Modifier definitions follow standard AMA CPT and CMS HCPCS Level II guidance and are for educational reference. Payer policies, billing formats, and coverage rules vary and change. Always verify the current rule with the specific payer before submitting. D3rx is not responsible for claim outcomes.