20100

Surgical exploration of a penetrating traumatic wound of the neck, including any combination of wound enlargement, debridement, foreign body removal, and ligation or coagulation of minor subcutaneous or muscular blood vessels encountered during the exploration.

Verified May 8, 2026 · 5 sources ↓

Medicare: $545.77
Work RVU: 10.12
Global, days: 10
Region: Other

Drawn from CMSAAPC

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 5 cited references ↓

Mechanism of injury documented as penetrating (e.g., stab, gunshot) — blunt trauma disqualifies this code family
Operative note specifies anatomic site as the neck, not chest, abdomen, or extremity
All components performed during exploration documented individually: wound enlargement, debridement, foreign body removal, vessel ligation/coagulation as applicable
Distinct documentation of any additional definitive repairs (vascular, airway, esophageal) performed through or alongside the exploration to support separate billing
Medical necessity established with corresponding ICD-10 diagnosis code reflecting penetrating neck wound
If wound closure billed separately, document the closure method (sutures, staples, tissue adhesive) and layer complexity

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 52 Reduced services 59 Distinct service 76 Repeat, same physician 77 Repeat, another physician 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon LT Left side RT Right side XS Separate structure

What this code covers

Source · Editorial summary grounded in 5 cited references ↓

CPT 20100 covers operative exploration of a penetrating neck wound — typically from a stab, gunshot, or similar mechanism. The code encompasses the full scope of what the surgeon does during that exploration: enlarging the wound tract, debriding devitalized tissue, removing foreign bodies or fragments, and controlling minor bleeding vessels by ligation or coagulation. All of those elements roll into a single code; you don't unbundle them. The code does NOT apply to blunt trauma — mechanism matters, and if it's not penetrating, 20100 is the wrong family.

The 010-day global period means routine follow-up through day 10 is bundled. Casting or strapping applied to the same anatomic area on the same date cannot be billed separately per NCCI policy (Musculoskeletal System section 20100-28899). Wound closure with sutures, staples, or tissue adhesive is separately reportable by the facility using the appropriate repair/closure code, but the same rules that govern bundling apply — if the closure is integral to the exploration, it doesn't get a separate line.

When a more definitive repair (vascular, tracheal, esophageal) is performed through or alongside the exploratory wound, those definitive procedure codes drive the billing instead of or in addition to 20100 depending on payer policy and the distinct work involved. Always document whether additional repairs were performed and whether they represent distinct, separately billable services.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU vs. total RVU

The work RVU (10.12) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (16.34) adds practice overhead and malpractice, and is what drives the Medicare payment below.

Work RVU	10.12
Practice expense RVU	4
Malpractice RVU	2.22
Total RVU	16.34
Medicare national rate	$545.77
Global period	10 days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

Setting	Medicare rate (national)
Office (PFS non-facility) Procedure performed in physician's office	$545.77
HOPD (APC 5162) Hospital outpatient department	$551.01
ASC (PI G2) Ambulatory surgical center (freestanding)	$295.47

Common denial reasons

The recurring reasons claims for CPT 20100 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

Mechanism coded as blunt trauma — 20100 is penetrating-wound-only; mismatched ICD-10 triggers CARC 97 denials
Bundled components (foreign body removal, debridement) billed as separate CPT codes on the same date without a supported distinct-procedure modifier
Casting or strapping applied to the same region billed separately, which NCCI prohibits when any Musculoskeletal System code (20100-28899) is billed for the same area
Wound closure code submitted alongside 20100 without documentation that the closure represented work beyond the exploration itself
Missing or vague operative note — audit teams flag notes that do not specify the penetrating mechanism, the neck as the explored site, or the scope of intraoperative findings

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 5 cited references ↓

01Can 20100 be used for a blunt trauma neck wound?

No. The 20100–20103 family is strictly for penetrating wounds. If the mechanism is blunt, select a different code based on what was actually repaired.

02Is foreign body removal billed separately when found during a 20100 exploration?

No. Foreign body removal encountered during wound exploration is included in 20100 per CPT Assistant guidance. Billing a separate foreign body removal code for the same encounter is an NCCI bundling violation.

03If the surgeon also performs a vascular repair during the neck exploration, can both codes be billed?

It depends on payer policy and the documentation. A definitive vascular repair is typically a distinct service and may be separately reportable — but the operative note must clearly support the additional work as beyond the exploration itself. Use modifier 59 or XS if billed together.

04Can wound closure codes (12001–13153) be billed alongside 20100?

Facilities can report wound closure separately using the appropriate repair/closure CPT code. For the professional claim, if the closure is integral to the exploration, it does not get its own line. Payer policies vary; confirm with individual payer guidelines before routinely appending closure codes.

05What is the global period for 20100, and what does it include?

The global period is 010 days. That covers the day of surgery and all routine follow-up through post-op day 10. Unrelated services in that window require modifier 79; related unplanned returns to the OR require modifier 78.

06Can you bill 20100 and a casting code for the same neck region on the same date?

No. NCCI policy explicitly prohibits separate reporting of casting, splinting, or strapping codes when any Musculoskeletal System code (20100–28899) is billed for the same anatomic area on the same date.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira Scribe

Mira's AI scribe captures the penetrating mechanism (stab, gunshot, etc.), anatomic site (neck), and each intraoperative component performed — wound enlargement, debridement, foreign body removal, vessel ligation or coagulation — directly from dictation. It also flags when the surgeon dictates a concurrent definitive repair, prompting review for separate coding. This prevents the most common denial trigger: a vague operative note that fails to establish medical necessity for 20100 over a simple laceration repair code.

See how Mira captures CPT 20100 documentation