CPT code 00862: Anesthesia for extraperitoneal procedures

Key Takeaways

CPT code 00862 covers anesthesia for extraperitoneal procedures in the lower abdomen, including urinary tract and renal procedures, the upper one-third of the ureter, and donor nephrectomy.

The code carries 7 anesthesia base units per the ASA Relative Value Guide. Medicare reimbursement adds time units to that base, then multiplies the total by the conversion factor.

Wrong modifier selection is the leading denial trigger for anesthesia claims. Modifiers AA, QK, QX, QY, QZ, AD, G8, and G9 each signal a distinct provider relationship and billing scenario.

Practice management software like Pabau automates base unit and time unit calculations, modifier suggestions, and claim scrubbing to reduce manual errors on complex anesthesia claims.

CPT code 00862 covers anesthesia for extraperitoneal procedures in the lower abdomen: nephrectomy, donor kidney removal, and repairs to the upper third of the ureter. The surgeon has to stay outside the peritoneal cavity for this code to apply.

Mix up that detail on the operative report, and the claim lands on the wrong code. The base units and the payment attached to it end up wrong too. That single anatomical distinction is where most 00862 denials start. It is worth getting right before the claim ever reaches the payer.

What is CPT code 00862?

CPT code 00862 describes anesthesia services for extraperitoneal procedures in the lower abdomen, including urinary tract and renal procedures, the upper one-third of the ureter, or donor nephrectomy. That descriptor comes directly from the AMA’s CPT code set, the authoritative source for procedure code definitions.

The code sits inside the anesthesia section of the CPT codebook, code range 00100 to 01999, which prices anesthesia on a base-unit-plus-time-unit model rather than the flat per-encounter model used by codes like HCPCS G0442. Knowing which procedures fall under CPT code 00862 is the first step toward a clean claim.

Procedures billed under this code typically include nephrectomy (partial or total), living donor nephrectomy, retroperitoneal lymph node dissection, and repair of the upper third of the ureter. The anatomical test is simple: if the surgeon reaches the kidney or ureter without opening the peritoneal cavity, that is extraperitoneal access, and CPT code 00862 applies.

Why CPT 00862 carries 7 base units

CPT code 00862 carries 7 anesthesia base units per the American Society of Anesthesiologists (ASA) Relative Value Guide. Base units price the complexity and risk of the anesthetic itself, independent of how long the case runs. Time units get added on top, and Medicare counts one time unit for every 15 minutes of anesthesia time.

Here is how that plays out on a typical case. A 90-minute extraperitoneal nephrectomy carries the 7 base units for CPT code 00862, plus 6 time units (90 minutes divided by 15), for 13 total units.

Multiply that by the 2026 national Medicare anesthesia conversion factor of $20.4976, roughly $20.50 before any locality adjustment. The case pays around $266.47 nationally, before the Geographic Practice Cost Index moves it up or down for where the service was furnished.

Always document anesthesia start and stop times in the operative record. Missing time documentation is one of the most common reasons anesthesia claims get underpaid or denied outright.

What Medicare actually pays for CPT 00862 in 2026

Medicare calculates anesthesia reimbursement with the formula above, then adjusts it by locality through the Geographic Practice Cost Index (GPCI). The CMS Physician Fee Schedule tool pulls exact locality-adjusted rates by MAC jurisdiction, and national averages are only a starting benchmark. What CPT code 00862 actually pays depends on where the service was furnished.

Run the FastRVU RVU lookup tool before submitting a claim to confirm current unit values and the estimated payment. Anesthesia conversion factors update every year, and billing at the prior year’s rate is a common, avoidable underpayment.

Picking the right modifier for CPT 00862

Every CPT code 00862 claim needs at least one modifier that identifies the provider type and the care delivery model. Missing or mismatched modifiers cause more anesthesia denials than any other single error. The good news is that the modifier set is short and well defined.

Modifier QK must always be paired with QX on the CRNA’s claim. Billing QK without QX, or the reverse, is a coordination error that triggers automatic denial. Confirm your billing team applies both in the correct sequence before submission.

One question worth flagging here: what if the CRNA works completely independently, with no physician involved at all? Then QZ is the only modifier that applies, and QK/QX do not come into it. Pairing QZ with a supervising physician’s QK claim on the same case is a fast way to trigger a payer audit.

The billing checklist that keeps CPT 00862 claims clean

Clean claims for CPT code 00862 come down to three things: complete documentation, the correct modifier, and an accurate ICD-10 pairing. Miss any one of them, and the claim either denies or underpays. Keeping HIPAA-compliant claim submission standards in place throughout the process matters just as much.

• Document anesthesia start and stop times. Medicare requires time-based documentation to calculate time units. An anesthesia record without precise timestamps pays on base units only.
• Record the provider delivery model before billing. Is this personal performance (AA), medical direction (QK/QX), or independent CRNA care (QZ)? The delivery model has to match both the modifier on the claim and the documentation in the record.
• Verify prior authorization requirements by payer. Medicare does not typically require prior authorization for anesthesia services, but commercial payers and Medicaid managed care plans vary significantly. Check the specific plan before the procedure.
• Pair the claim with a supporting ICD-10 code. CMS requires a diagnosis code that medically justifies the anesthesia. For nephrectomy procedures, expect a kidney disease or neoplasm code. A mismatch between procedure and diagnosis is a leading denial trigger.
• Confirm CRNA billing eligibility under state law. States that have opted out of the physician supervision requirement allow CRNAs to bill independently under QZ. In supervision states, QX pairs with the directing physician’s QK claim instead. Check your state’s current opt-out status before changing your billing model.

Tracking clinical documentation requirements at the point of care cuts billing errors downstream. The anesthesia record is the single source of truth for time, provider type, and clinical circumstances.

When qualifying circumstance codes apply to CPT 00862

Qualifying circumstance codes are add-on codes for unusual conditions during anesthesia administration. Append them to CPT code 00862 only when the clinical situation genuinely meets the criteria, since each one adds units to the base claim. Four qualifying circumstance codes can apply, according to AMA codebook guidelines:

Not every payer accepts all four qualifying circumstance codes. Medicare covers 99100 but applies stricter criteria to 99116 and 99135. Check the payer’s specific coverage policy, and document the qualifying condition clearly in the anesthesia record before billing the add-on code.

The same discipline applies to any structured clinical documentation. A behavioral health intake tool like a BPD worksheet and a primary care screening form like the AUDIT alcohol screening test follow the same rule: an undocumented condition cannot support a higher-intensity code.

Which ICD-10 code actually supports a 00862 claim

Every anesthesia claim needs a diagnosis code that supports medical necessity. For CPT code 00862, the ICD-10-CM code should reflect the condition driving the renal, urologic, or donor surgery. The table below covers the most common pairings, verified against AAPC’s CPT code reference.

Not every kidney-related diagnosis on the chart is the reason for surgery. When hypertension shows up as a comorbidity secondary to a renal disorder, rather than as the reason for the procedure, ICD-10 code I15.1 documents that relationship without becoming the primary code driving the anesthesia claim.

CPT 00862 versus its closest anesthesia neighbors

The most common coding error in this section of the anesthesia codebook is selecting 00910 when the surgery actually used an extraperitoneal or open approach. CPT code 00862 covers extraperitoneal or open renal and ureteral access. CPT 00910 covers endoscopic access instead, and the surgical approach is what separates the two.

The same logic separates 00862 from its closest neighbors. CPT 00820 sits one section over, for the lower posterior abdominal wall rather than the urinary tract. CPT 00670 belongs to an entirely different family, built around spine and spinal cord procedures.

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Pabau automates base unit and time unit calculations, flags modifier requirements, and scrubs claims before submission. See how it reduces manual errors for complex anesthesia codes like 00862.

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Where CPT 00862 claims usually fall apart

Most anesthesia denials are preventable. The patterns below show up most often in CPT code 00862 claims, and fixing each one systematically cuts denial rates and protects revenue.

A pre-submission claim scrub that checks modifier presence, time documentation, and ICD-10 alignment catches most of these before the claim reaches the payer. Building time-saving billing features into the workflow removes the manual dependency that lets these errors slip through in the first place.

Why anesthesia billing needs one connected system

The billing workflow for CPT code 00862 involves more moving parts than most surgical codes: base units, time-based calculations, provider-type modifiers, qualifying circumstance add-ons, and ICD-10 pairing. Handling all of that manually, in a disconnected system, is where errors compound.

That holds true whether the claim comes from a urology group or a plastic surgery practice, since purpose-built practice management software brings every step into one connected workflow.

Pabau’s claims management software automates the base unit and time unit calculation, suggests the right modifier for the documented provider relationship, and runs a pre-submission scrub that flags mismatches before the claim goes out. That means fewer denials, faster payments, and less time spent on rework.

• Automated unit calculation. Enter anesthesia start and stop times, and the system calculates time units and adds them to the 7 base units for CPT code 00862 automatically.
• Modifier validation. The platform flags claims where the modifier does not match the documented provider delivery model, for example AA when QK/QX was expected.
• ICD-10 crosswalk checking. Built-in crosswalk logic flags common ICD-10 and CPT pairings, cutting diagnosis-mismatch denials.
• Denial tracking and analytics. Reporting surfaces denial patterns by code and payer, so recurring issues with 00862 show up at the practice level instead of staying buried in individual claim notes.

For practices with high volumes of urologic and renal surgical anesthesia, tools like these directly strengthen revenue cycle management and cut administrative overhead. Connecting the EHR integration layer means anesthesia records flow straight into billing without manual transcription, removing the disconnect between care delivery and a clean claim.

Practices that want to simplify medical billing benefit most from platforms that handle billing complexity inside the same system as clinical documentation, whether that practice is a general surgery group or an OB/GYN surgical center. That removes the manual lookup step that causes most preventable anesthesia billing errors.

Getting CPT 00862 claims paid the first time

CPT code 00862 is a commonly used anesthesia code with a well-defined scope, but clean billing depends on precision in several places at once: modifier selection, time documentation, ICD-10 alignment, and qualifying circumstance reporting. Each one is a potential failure point when the workflow relies on manual entry and disconnected systems.

Practice management software like Pabau handles the unit calculation, modifier validation, and pre-submission scrubbing that keep 00862 claims clean from the first submission. To see how that fits into the rest of the front office, take a look at patient scheduling software, or book a demo with the team.

Continue your research

Need a deeper look at claims management? Claims management software covers how Pabau automates submission, scrubbing, and denial tracking for complex procedure codes.

Concerned about billing compliance documentation? HIPAA compliance for practices breaks down the documentation and claim submission standards that apply to all healthcare providers.

Also billing outpatient wound care? Our CPT 97597 guide covers the documentation Medicare requires for every encounter, and the same specificity habit protects anesthesia claims too.

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