If there’s one section of CPT 2026 that justified its own training session, it’s peripheral vascular intervention. Effective January 1, 2026, the AMA deleted the lower extremity revascularization (LER) codes that coders had used for over a decade — 37220 through 37235 — and replaced them with 46 new territory-based codes spanning 37254–37299. This isn’t a tweak; it’s a new mental model.
The old logic vs. the new logic
The legacy codes were organized around vessel groups (iliac, femoral/popliteal, tibial/peroneal) and stacked interventions in a hierarchy: angioplasty, then atherectomy, then stent, with add-ons for additional vessels. Coders picked the single most intensive service per territory.
The 2026 framework keeps a territory concept but redraws the map into four regions:
- Iliac
- Femoral/popliteal
- Tibial/peroneal
- Inframalleolar — new as its own territory, reflecting the growth of below-the-ankle interventions for limb salvage
Within each territory, code selection now turns on lesion complexity: straightforward lesions (stenosis) versus complex lesions (occlusion). That distinction is baked into the code descriptors, which means it must be baked into the operative documentation too. The framework also carries clearer add-on logic for reporting when multiple vessels within a territory are treated — a frequent source of confusion (and denials) under the legacy hierarchy.
Why the change? The old codes predated much of modern practice. Below-the-ankle (inframalleolar) intervention has become central to limb-salvage programs for critical limb ischemia, yet the legacy structure had no clean way to report it. And treating a chronic total occlusion is meaningfully more work than dilating a simple stenosis — work the old codes valued identically.
What’s bundled
The new codes are comprehensive. Bundled into each primary code:
- Vascular access and catheter placement
- The intervention itself
- All intraprocedural imaging, including radiological supervision and interpretation
- Completion imaging documenting procedural success
- Arterial closure — manual pressure, closure device, or sutures — which is not separately billable
If your physicians or charge-entry staff are used to separately reporting selective catheterization or closure devices with LER procedures, that habit now creates unbundling errors.
Documentation your coders now need
To assign these codes confidently, the operative report should clearly state:
- Which territory or territories were treated, in anatomic terms
- Lesion type — stenosis versus occlusion — for each treated lesion
- What was done in each territory (angioplasty, atherectomy, stenting, or combinations)
- Imaging performed and the completion result
Vague reports that once supported a legacy code may no longer be specific enough. This is a prime opportunity for a short CDI huddle with your vascular surgeons and interventionalists.
Practical transition steps
- Purge the deleted codes from superbills, order sets, chargemasters, and favorites lists. Claims with 37220–37235 for 2026 dates of service will deny.
- Crosswalk your top procedures. Map last year’s ten most frequent LER codes to their 2026 equivalents and share the cheat sheet with coders and billers.
- Audit the first quarter. Pull early 2026 LER claims and check territory assignment, lesion complexity, and any stray unbundled charges.
- Watch payer edits. New code families always take payers a cycle or two to settle; track denials by reason code so you can distinguish your errors from theirs.
Structural rewrites like this are disruptive, but they exist because the old codes no longer described modern practice. Coders who learn the four-territory, two-complexity logic will find the new system more intuitive than the hierarchy it replaced.
CPT is a registered trademark of the American Medical Association. Verify all codes and bundling rules against the official CPT 2026 codebook, NCCI edits, and payer policies before reporting.
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Originally Published On: Medical Coding News
Photo courtesy of: Getty Images
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