Wound Repair With Multiple Laceration Sites and a Complication
A 34-year-old construction worker is brought to the ED after a fall through a glass door. He has three lacerations. Wound A is a 9.0 cm linear laceration of the left forearm; it is layered, and the provider debrided devitalized tissue and closed it with 12 sutures. Wound B is a 3.5 cm laceration of the left cheek that is superficial and closed with 4 sutures. Wound B later reopens after the patient sneezes; the ED physician re-closes it during the same visit, adding 3 sutures. Wound C is a 5.0 cm laceration of the left thigh, also layered, closed with 8 sutures. Total time spent on all wound care was 70 minutes. The facility bills on the 837I and the physician bills on the 837P. The patient has no other injuries.
1. Determine the correct CPT repair codes and modifiers for the physician's claim. Explain how the multiple-wound rules apply to the forearm, cheek, and thigh.
Read the worked answer
Step 1 - Classify each wound by complexity and site.
- Wound A (forearm, 9.0 cm, layered/debrided): intermediate repair, forearm. Intermediate repair of the forearm is 12035 (2.6–7.5 cm) or 12036 (7.6–12.5 cm) - 9.0 cm falls in 12036.
- Wound B (cheek, 3.5 cm, superficial): simple repair, face. Simple repair of face is 12013 (2.6–5.0 cm) - 3.5 cm = 12013.
- Wound C (thigh, 5.0 cm, layered): intermediate repair, thigh. Intermediate repair of the thigh is 12022 (2.6–7.5 cm) - 5.0 cm = 12022.
Step 2 - Apply the multiple-wound rules (CPT repair guidelines).
- Repair of multiple wounds in the same site/classification are added together and coded as a single code. None of these three are in the same site group here, so no grouping occurs.
- When wounds are in different sites/classifications, report the most complex repair first at full value, then each additional wound with modifier -59 (or -XU if the payer prefers) at the reduced value.
Step 3 - Rank by complexity. Intermediate repairs (12036, 12022) outrank the simple repair (12013). Between the two intermediate repairs, rank by relative value; the larger/more extensive forearm repair is listed first at full value, the second intermediate repair gets -59, and the simple repair gets -59.
Result (physician):
- 12036 (full value)
- 12022-59
- 12013-59
Do not add the re-closure of Wound B as a separate repair - it is the same wound, same visit; the reopening does not create a new billable repair, and the extra sutures are part of the same service. Do not bill by time; wound repair is not a time-based code.
2. The facility wants to bill the wound care on the 837I. Explain how the facility's coding differs from the physician's and whether the 70 minutes changes anything.
Read the worked answer
Facility vs. physician. On the 837I, the facility reports the ICD-10-PCS procedure codes for the repairs (root operation Repair in the Integumentary system, with the appropriate body-part, approach, and device characters) plus the ICD-10-CM diagnosis codes. The facility does not bill CPT 12036/12022/12013 on the UB-04 for the professional repair - those are the physician's 837P codes. The facility's reimbursement comes through the OPPS/APC assignment, not the CPT relative-value units.
Does the 70 minutes matter? No. Wound repair codes are not time-based; time does not change code selection on either claim. Time-based E/M (e.g., prolonged services) is not added to a procedure on the same day by the same provider unless the payer's rules permit it and the E/M is separately documented and significant - here the repair is the procedure and time is irrelevant.
Key point: The same clinical encounter generates two different code sets. The physician's CPT reflects the complexity/site of each repair with the multiple-wound modifiers; the facility's PCS reflects the root operation performed. Mixing them (billing CPT on the 837I or PCS on the 837P) is a claim error.