CPT code 12004 – Simple wound repair, 7.6-12.5 cm

Key takeaways

CPT code 12004 reports simple, single-layer repair of superficial wounds totaling 7.6-12.5 cm on the scalp, neck, axillae, external genitalia, trunk or extremities.

Add together every simple repair in the 12001-12007 anatomic group from one session, then choose the code that matches the total.

Short wounds rarely reach 12004: 1.8 cm plus 1.0 cm is 2.8 cm, which is 12002.

Medicare lists 12004 with a 0-day global period and 1.40 work RVUs, about $162 nationally in an office in 2026.

The intermediate counterpart, 12034, needs documented layered closure and carries a 10-day global period.

CPT code 12004: Definition and official descriptor

CPT code 12004 is simple repair of superficial wounds of the scalp, neck, axillae, external genitalia, trunk and/or extremities, 7.6 cm to 12.5 cm.

Hands and feet count as extremities. The length is the combined total of every simple repair in that anatomic group during one session.

The American Medical Association (AMA) maintains the CPT code set, and payers match each claim against its descriptor. The code sits in the Repair (Closure) subsection of the Integumentary System chapter. “Simple” is a defined CPT term. It means a superficial wound in the epidermis, dermis or subcutaneous tissue, closed in one layer.

What CPT code 12004 covers and what it excludes

CPT code 12004 covers simple closure of superficial wounds whose summed length falls between 7.6 cm and 12.5 cm at the listed body sites. Sutures, staples and tissue adhesive all count, as long as the closure is a single layer.

Included under CPT code 12004:

• Single-layer closure of the epidermis, dermis or subcutaneous tissue
• Simple lacerations closed with sutures, staples or tissue adhesive
• Wounds on the scalp, neck, axillae, external genitalia, trunk and extremities, including hands and feet
• A summed length of 7.6 cm to 12.5 cm for all simple repairs in this anatomic group
• Local anesthesia and the routine cleansing needed to close the wound

Excluded from CPT code 12004 (use a different code):

• Wounds of the face, ears, eyelids, nose, lips or mucous membranes, which use 12011-12018 (12015 at this length)
• Layered closure, or single-layer closure of a heavily contaminated wound needing extensive cleaning, which is intermediate repair (12031-12057)
• Complex repair with extensive undermining, debridement of wound edges or retention sutures (13100-13160)
• Totals outside the range: 12001 up to 2.5 cm, 12002 for 2.6-7.5 cm, and 12005-12007 for longer repairs
• Closure with adhesive strips alone, which CPT directs to the appropriate E/M code instead

Tissue adhesive needs one payer check. Medicare asks for HCPCS G0168 when adhesive is the only closure material, rather than a 12001-12007 code. Many commercial payers accept the CPT repair code, so confirm each contract before billing.

How to measure wound length for CPT code 12004

Wound length for CPT code 12004 is the sum of every simple repair in the 12001-12007 anatomic group performed in one session. You report one code for that total, never one code per wound. Measure and add first, because the total decides the code.

1. Measure each wound in centimeters along its length before closure.
2. Sort wounds by classification and anatomic group. A simple scalp repair and a simple forearm repair share the 12001-12007 group, so they add together. A facial wound or a layered closure goes into its own group.
3. Add the lengths within each group. The total chooses the code, not the longest wound.
4. Report one code per group. Two simple trunk wounds totaling 9.0 cm are one unit of 12004, not two codes.
5. Record each measurement and the total in the procedure note, so an auditor can repeat the arithmetic.

The last rows show where 12004 most often disappears. Splitting one session’s repairs by site or by complexity can leave no group long enough to reach 7.6 cm. Code each group from its own total, even when the combined length of every wound looks like a 12004.

Work RVUs and global periods come from the CMS 2026 Physician Fee Schedule relative value file (RVU26D, October 2026 release). All six codes cover the same body sites.

CPT code 12004 vs 12002, 12005, 12015 and 12034

Three variables separate 12004 from its neighbors: the summed length, the anatomic group and the repair classification. Change any one of them and the code changes. To check a neighbor’s descriptor, look it up in our CPT code library.

The step up to intermediate repair is the one auditors watch. It needs documented layered closure of deeper subcutaneous tissue and superficial fascia. A single-layer closure of a heavily contaminated wound needing extensive cleaning also qualifies. Length alone never justifies it.

Which intermediate code matches 12004 depends on the site. A trunk or forearm repair moves to 12034, while a neck, hand, foot or genital repair moves to 12044. Both carry a 10-day global period, so the upgrade also changes how follow-up visits are billed. The chart below maps all four outcomes for a total in this range.

What qualifies as simple repair under CPT guidelines

Simple repair is a one-layer closure of a superficial wound, with no significant involvement of deeper structures. Payer auditors apply that definition literally, so the note has to show it.

The closure technique decides the code. A clean 8 cm laceration on the back of the hand closed with one layer of 4-0 nylon is 12004. The same wound needing deep sutures because subcutaneous fat was disrupted is intermediate repair, 12044. Document the technique so an auditor reaches the same conclusion without calling the provider.

Documentation requirements to support CPT code 12004

Payers expect specific documentation to support CPT code 12004. A missing element is grounds for denial or a post-payment audit. Build these fields into the procedure note template for every wound repair.

A superbill documentation workflow that ties procedure codes to note fields keeps the measurement attached to the charge. When the coder cannot find the wound length in the note, the claim waits or comes back.

Modifiers for CPT code 12004

CPT code 12004 takes modifiers depending on what else happened at the visit. A wrong or missing modifier is one of the most common reasons repair claims are denied.

Modifier 25 is the one most often misapplied. It goes on the E/M code, never on 12004. A patient who comes in only for a laceration repair does not support a separate E/M. Reviewing vitals or medications does not change that.

CPT code 12004 reimbursement rates and RVU values

Medicare pays CPT code 12004 from relative value units (RVUs) in the Physician Fee Schedule. The CMS 2026 relative value file gives 12004 1.40 work RVUs and 0.33 malpractice RVUs. Practice expense is 3.12 RVUs in an office and 0.43 RVUs in a facility.

The national amounts use the 2026 conversion factor of $33.4009, before geographic adjustment. Qualifying APM participants use $33.5675, which gives $162.80 and $72.51. Check your own locality in the CMS Physician Fee Schedule lookup tool.

Commercial rates depend on each contract, so compare them against your own fee schedule rather than a rule of thumb. Place of service changes the amount too. An office repair (POS 11) and an emergency department repair (POS 23) pay differently from the same payer.

Global period and follow-up care for CPT code 12004

CPT code 12004 has a 0-day global period, listed as 000 in the Medicare Physician Fee Schedule. Only care on the day of the repair is bundled into its payment. The AAPC notes that Medicare moved simple repairs from a 10-day to a 0-day global period in 2011.

Bundled into 12004 on the day of the repair:

• The evaluation that leads to the decision to repair, unless a significant, separate E/M supports modifier 25
• Local anesthesia and wound preparation
• Dressing and immediate post-repair care on the same day

Billed separately:

• A wound check or suture removal visit on a later day, reported as an E/M when the note supports one
• An unrelated E/M on a later day, with no modifier needed
• A new procedure at another site on the same day, with the right modifier

Older references still describe a 10-day global for this code. Holding follow-up claims for ten days, or adding modifier 24 to a later visit, follows a rule that no longer applies to 12004. Intermediate and complex repairs still carry a 10-day global, so check the code before applying either habit.

Common denial reasons for CPT code 12004 and how to avoid them

Most denials for CPT code 12004 trace back to the note or the arithmetic. Denial management starts with spotting these patterns before claims leave the practice.

Submitting a clean claim for CPT code 12004 depends on a front-end check. Confirm the site against the descriptor, the measurements and total in the note, and any modifier the visit needs.

Medicare and payer coverage policies for CPT code 12004

Medicare covers CPT code 12004 when the repair is medically necessary and the note supports the code. CMS sets the national rules, and Medicare Administrative Contractors (MACs) can add local coverage determinations (LCDs).

Place-of-service considerations:

• POS 11 (office): The non-facility rate applies, because the practice bears supply and staff costs.
• POS 23 (emergency department): The facility rate applies, because the hospital provides the setting.
• POS 22 (hospital outpatient): The facility rate applies, for the same reason.

Medicaid programs and commercial plans set their own rules for repair codes and tissue adhesive. Medical billing compliance for wound repair rests on a note that matches the code billed. The AAPC Codify CPT lookup helps confirm code relationships and bundling edits when you prepare an audit response.

How Pabau keeps CPT code 12004 claims accurate

Most CPT code 12004 denials start between the note and the claim. The provider documents the repair, but the measurements never reach the biller, and the claim goes out with the wrong length code.

Pabau, our practice management and billing software, keeps the procedure note, the invoice and the claim in one patient record. Its claims management software builds the CMS-1500 claim from the invoice. Pabau’s Claim.MD integration sends it to thousands of US payers and runs real-time eligibility checks before the visit.

Payments come back as electronic remittance advice matched to the claims they settle. Your team sees an underpaid 12004 line without matching remittances by hand. The billing workflow stays audit-ready because the note behind each code is one click away.

Bill wound repairs from complete notes

Pabau links procedure notes, invoices and claim submission, so a 12004 claim leaves with the measurements behind it. Eligibility checks and remittance matching run in the same system.

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Conclusion

Choosing 12004 comes down to arithmetic plus one clinical check. Measure every wound, group by site and classification, add, then read off the code. If the total lands between 7.6 and 12.5 cm and every closure was single-layer, 12004 is right.

Some older references still list a 10-day global for 12004, which is wrong. Update your coding cheat sheets and charge descriptions before an audit finds it.

Book a demo to see how Pabau carries wound measurements from the procedure note onto the claim.

Continue your research

Need to understand how claims reach payers? Medical claims clearinghouse guide explains how the clearinghouse layer works between practice and payer.

Want to reduce claim rejections before submission? Revenue cycle management overview covers the end-to-end billing workflow that catches errors before they become denials.

Credentialing affecting your reimbursement? Insurance credentialing guide walks through the steps to get properly enrolled with Medicare and commercial payers.

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