Kidney Stone Coding and Reimbursement
Overview
Kidney Stones (Nephrolithiasis / Ureterolithiasis)
Coding & Documentation Overview
Kidney stone coding hinges on documenting stone location, stone burden/size, procedural approach (ESWL, ureteroscopy, PCNL), and whether a ureteral stent was placed/removed/exchanged. As of July 1, 2026, the facility code also turns on the equipment used β whether the ureteroscope is suction-integrated and whether a suction-enabled ureteral access sheath was used. Medical necessity should clearly explain why treatment is needed now (obstruction, infection, refractory pain, recurrent stones, failure of conservative management).
- ESWL (shockwave lithotripsy)
- Ureteroscopy / pyeloscopy with lithotripsy and/or basket removal
- Suction-assisted ureteroscopy (suction-integrated scope and/or suction-enabled access sheath)
- Percutaneous nephrolithotomy (PCNL)
- Ureteral stent insertion (or related stent management per operative plan)
- Location: kidney vs ureter; proximal/mid/distal ureter
- Stone size/burden and whether single vs multiple stones
- Approach: ESWL vs ureteroscopy vs PCNL; laterality (LT/RT)
- Equipment: scope type (suction-integrated vs standard) and whether a suction-enabled access sheath was used β this now drives facility code selection
- Stent: inserted, exchanged, removed (and why)
- Medical necessity: obstruction, infection, recurrent stones, refractory pain, failed conservative management
- CPT®: ESWL, ureteroscopy with lithotripsy, basket/removal/manipulation, PCNL, stent insertion
- Facility HCPCS: C9761 (suction-integrated ureteroscope / steerable ureteral catheter) and, effective July 1, 2026, C8014 (suction-enabled ureteral access sheath)
- ICD-10: N20.0 kidney stone, N20.1 ureteral stone, N20.2 kidney with ureteral stone, N20.9 unspecified calculus
- Modifiers: laterality (LT/RT) when required; -59/-XS for distinct services when allowed; -22 for significantly increased work
- Unclear stone location and laterality
- Missing stone size/burden for complexity/medical necessity
- Incorrect unbundling (e.g., billing lithotripsy codes together on same side when not allowed)
- Stent work not supported or double-counted against bundled services
- Op note does not identify the scope type β the facility cannot support C9761 vs C8014 selection without it
Top Questions (quick answers)
How do I pick the correct CPT code for a kidney stone case?
Choose based on the approach (ESWL vs ureteroscopy vs PCNL), the stone location, and whether lithotripsy, basket removal, and/or stent placement were performed.
Can I bill ureteroscopy with lithotripsy and basket removal separately?
Sometimesβonly when treating separate stones and documentation supports distinct work. Use -59/-XS only when allowed by payer edits and supported by anatomy and operative detail.
When are LT/RT modifiers required?
Use laterality modifiers when required for unilateral procedures involving a bilateral organ (kidney/ureter). Documentation should clearly state which side was treated.
What are the most common ICD-10 codes for kidney stones?
N20.0 kidney stone, N20.1 ureteral stone, N20.2 kidney stone with ureteral stone, N20.9 unspecified urinary calculus (use the most specific code supported).
Which facility code applies when suction is used during ureteroscopic lithotripsy?
Effective July 1, 2026, the scope decides the code. A suction-integrated ureteroscope (or steerable ureteral catheter for vacuum aspiration) supports C9761 β with or without a suction sheath. A suction-enabled ureteral access sheath with a standard (non-suction) scope supports the new C8014. Never report both β see the Facility Tab for details.
How do I document medical necessity for stone treatment?
Document the clinical trigger (obstruction/hydronephrosis, infection, refractory pain, recurrent stones, failure of conservative management)
and why the selected approach is appropriate now.
What stone details should always be in the operative note?
Location (kidney vs ureter; proximal/mid/distal), laterality, stone burden/size, whether single vs multiple stones,
and what was actually done (lithotripsy, basketing/removal, manipulation, stent).
How do I code ureteroscopy with lithotripsy and stent placement?
Commonly reported using the ureteroscopy-with-lithotripsy-and-stent code when those elements are performed in the same session on the same side.
How do I use -59/-XS for separate stones?
Use only when the operative report supports distinct stones treated with distinct services and payer edits allow separate reporting.
Do not use modifiers to bypass edits for the same-side same-stone work.
What global periods should I watch?
Endoscopic stone procedures (ureteroscopy, stent work) carry a 0-day global; ESWL and PCNL carry a 90-day global on the Medicare fee schedule.
Confirm using your MAC/payer fee schedule.
Facility FAQ: What changed for suction-assisted stone cases on July 1, 2026?
CMS revised the C9761 descriptor and created a new code, C8014, effective July 1, 2026.
C9761 now explicitly covers cases performed with a steerable ureteral catheter or suction-integrated ureteroscope.
C8014 covers ureteroscopic lithotripsy performed with a suction-enabled ureteral access sheath (with irrigation, if performed).
This resolves the early-2026 authority conflict over whether a suction sheath could satisfy the old C9761 descriptor β sheath-based cases with a standard scope now have their own code.
Facility FAQ: How do I choose between C9761, C8014, and 52353/52356?
- Suction-integrated ureteroscope (with or without a suction sheath): report C9761 only.
- Suction-enabled access sheath + standard (non-suction) scope: report C8014.
- No suction sheath and no suction scope: report 52353 or 52356.
- Never report C9761 and C8014 together β both are primary (status indicator J1) comprehensive codes.
Facility FAQ: What about the device codes?
C9761 and C8014 are device-intensive. For Medicare
HOPD claims, report C1747 (single-use urinary tract endoscope)
and/or C1889 (single-use suction sheath) with the invoice price β payment on the device lines is
$0 (packaged), but reporting feeds future rate setting. For Medicare ASC claims,
device codes are not required and may trigger rejections or invoice requests from some MACs.
What are the biggest facility risks now?
- Code-selection mismatch: billing C9761 when the scope was not suction-integrated (or C8014 when it was) is a mismatch auditors can spot from the op note.
- New-code adoption lag: commercial payers and Medicare Advantage plans may not have loaded C8014 yet β confirm the code is loaded and payable before converting your chargemaster.
- Audit/takeback risk: new-technology and higher-dollar claims are common targets; initial payment does not guarantee retention.
- Documentation mismatch: "URS with suction" is too vague when the billed code is built around a specific equipment combination.
Practical takeaway: The operative note must state the scope type (suction-integrated or standard), name the device(s) used, and describe the aspiration workflow. That single documentation habit supports correct code selection and protects both C9761 and C8014 claims.
Product Specific Coding and Reimbursement Information
ClearPetra by Karl Storz
CVAC System by Calyxo
DISSβ’ Scopes by Pusen
Hoover Fans by Dornier
Axis II Clerix by Dornier