CPT Code 01716: Anesthesia for biceps tenodesis
CPT 01716 pays 5 base units for biceps tenodesis anesthesia, not the 3 that belo...
Last Updated: August 19, 2026
Key takeaways
CPT code 01682 is the anesthesia code for shoulder arthroplasty, including total shoulder replacement.
The ASA base unit value for 01682 is 10 units, and payment equals base plus time plus modifying units, multiplied by the conversion factor.
Modifier AA applies when the physician anesthesiologist personally performs the service, and a CRNA billing independently appends QZ.
Practice management software like Pabau tracks modifiers, procedure code libraries, and denial trends across your anesthesia claims.
CPT code 01638 is the anesthesia code for a total shoulder replacement: anesthesia for open or surgical arthroscopic procedures on the humeral head and neck, sternoclavicular joint, acromioclavicular joint, and shoulder joint, when the surgery performed is a total shoulder arthroplasty.
What CPT code 01682 covers
CPT code 01682 covers anesthesia services for shoulder joint arthroplasty. Use it whenever a physician anesthesiologist or Certified Registered Nurse Anesthetist (CRNA) provides general or regional anesthesia for a shoulder replacement. It is the correct anesthesia billing code for those cases.
It sits in the CPT code range 01000-01999, which is reserved for anesthesia services. Anesthesia codes work differently from surgical CPT codes. They do not describe the procedure itself. They describe the anesthesia management provided during the corresponding surgery. That distinction is what keeps a claim clean. A medical coding cheat sheet is a quick way to keep the two families straight at the desk.
Surgical procedures covered by 01682
CPT code 01682 applies to anesthesia for the following shoulder joint procedures:
- Total shoulder arthroplasty (TSA) replacing both the humeral head and glenoid
- Partial shoulder replacement (hemiarthroplasty), replacing the humeral head only
- Reverse total shoulder arthroplasty, where the socket and ball are switched
- Shoulder replacement revision procedures covered by the same arthroplasty crosswalk
The code does not cover anesthesia for non-arthroplasty shoulder procedures. Rotator cuff repairs, SLAP repairs, and labral procedures fall under different anesthesia codes, typically 01610 or 01630. Billing 01682 for those cases is an upcoding risk and an audit trigger.
Base units and reimbursement calculation
Anesthesia payment follows a formula that has nothing in common with standard surgical billing. The CMS Physician Fee Schedule sets the conversion factor. The American Society of Anesthesiologists publishes the base units in its Relative Value Guide (RVG).
The formula is: Reimbursement = (Base Units + Time Units + Modifying Units) x Conversion Factor
Worked reimbursement example
Take a total shoulder replacement lasting 120 minutes, with no qualifying circumstances, billed to Medicare with modifier AA:
- Base units: 10
- Time units: 8 (120 minutes divided by 15)
- Modifying units: 0
- Total units: 18
- Reimbursement estimate: 18 x $21.11, or roughly $380
Actual payment shifts with your locality adjustment, the payer, and whether a CRNA or an anesthesiologist performed the service. Treat the figure above as illustrative. Check the current conversion factor in the CMS coding and billing resources before you process claims.
How anesthesia time is calculated
Time starts when the anesthesiologist or CRNA takes responsibility for the patient, usually during pre-anesthetic preparation. It stops when the provider is no longer in personal attendance. In practice that is the handoff to the post-anesthesia care unit.
- Record exact start and stop timestamps in the anesthesia record
- Each 15-minute block equals one time unit, and Medicare rounds to the nearest 15 minutes
- A typical total shoulder replacement runs 90-150 minutes, producing 6-10 time units
- Missing timestamps and unclear handoffs are a leading denial trigger
Required modifiers for 01682
Every anesthesia claim needs a provider-type modifier. Leaving it off is the most common reason a 01682 claim is denied. Which modifier you use depends on who performed the service, and on whether a physician medically directed a CRNA.
QK and QY both require the physician to satisfy the seven-step medical direction rule in CMS Medicare Claims Processing Manual Chapter 12. Document all seven steps for every medically directed procedure. Miss one step and the claim no longer qualifies for the medical direction payment rate.
Independent CRNA billing rights turn on state scope-of-practice law. They also depend on whether the state opted out of Medicare’s physician supervision requirement. Check the rules that apply to you before appending QZ, especially where independent CRNA practice is restricted.
Medicare billing rules for shoulder anesthesia
Medicare uses the standard anesthesia formula above, with a handful of CMS-specific rules layered on top. Those rules are where most preventable denials come from. Surgical practices billing high volumes of arthroplasty anesthesia feel it first, which is one reason surgical practice software now ships with modifier logic built in.
- Conversion factor: CMS updates the anesthesia conversion factor every year in the Physician Fee Schedule final rule. The 2025 national rate is roughly $21.11 per unit, before locality adjustments. Pull the current figure from the CMS PFS before you finalize claims for the billing year.
- Medical direction rule: The seven-step documentation requirement is mandatory on QK and QY claims. Missing documentation for any step means a downward adjustment or a denial.
- Claim form: Submit on CMS-1500. Box 24D carries both the anesthesia code and its modifier. Box 24G carries time in minutes, not a unit count.
- Concurrent procedures: Medicare caps the medical direction payment rate once a physician directs more than four concurrent CRNA cases, and modifier AD applies.
- Qualifying circumstances: Add-on codes 99100-99140 are separately payable under Medicare when the documented conditions exist.
Practices using digital documentation for anesthesia records capture start and stop times, seven-step attestations, and qualifying circumstances inside the patient record. That is where most Medicare denials are prevented. A HIPAA-compliant submission workflow matters just as much once those records leave your building.
Pro Tip
Audit your 01682 claims once a month, before month-end close. Filter by denial reason code CO-4 for an incorrect modifier and CO-16 for missing information. Those two codes account for most preventable anesthesia rejections, and both are correctable on resubmission inside the payer’s timely filing window.
Qualifying circumstances that may apply
Qualifying circumstance add-on codes raise payment when a documented clinical condition makes anesthesia management harder. Report them alongside 01682 only when the condition is present in the record.
Reporting a qualifying circumstance without documenting the underlying condition is an upcoding risk the Office of Inspector General (OIG) actively flags. The clinical record has to support each code before it reaches the claim.
Anesthesia crosswalk: Surgical CPT codes mapped to 01682
The anesthesia crosswalk maps surgical procedure codes to their matching anesthesia codes. For 01682, every one of those surgical codes involves shoulder arthroplasty. Codes for other bone and joint reconstruction, such as 21199, cross to entirely different anesthesia codes.
Shoulder procedures outside the arthroplasty family map to different anesthesia codes and must never be billed with 01682. Rotator cuff repair, code 23410, is the usual offender. The AAPC Codify CPT lookup lets coders confirm a crosswalk assignment before submission.
ICD-10 diagnosis codes paired with 01682
Every 01682 claim needs a diagnosis code that establishes medical necessity. The diagnosis has to justify the arthroplasty itself. Payers look hard at diagnosis linkage on high-cost surgical claims, and shoulder replacement is firmly in that group.
Check laterality against the operative report every time. A mismatch between diagnosis laterality and the surgical side triggers an automated denial under NCCI edits. Postprocedural diagnoses such as M96.3 follow the same laterality and encounter-character discipline.
Streamline your anesthesia billing workflow
Pabau helps anesthesia teams track modifiers, manage procedure code libraries, and spot denial patterns before they compound. See how it works in a live demo.
Common billing errors and claim denial reasons
Anesthesia claims deny more often than most surgical claims. Time-based billing, provider-type modifiers, and layered documentation each add a place for a claim to fail. For 01682, these are the patterns that recur in payer audits.
Reviewing each payer’s fee schedule before the contract year starts surfaces the policy changes that affect 01682. Centralized denial tracking then shows you a recurring pattern in weeks rather than quarters. Smaller teams working from an EMR for a small practice get the same benefit. A compliance checklist covers the documentation controls that stop these denials upstream.
How Pabau supports shoulder surgery anesthesia billing
Anesthesia billing has more moving parts than most surgical specialties. Time calculations, provider-type modifiers, medical direction rules, and qualifying circumstances all have to line up on one claim. Handle any of them by hand and you have added a place for an error to enter.
Practice management software like Pabau closes those doors. Its claims management software carries procedure code libraries with modifier prompts built in. The biller is reminded to append the right provider-type modifier while the claim is still open. Nothing reaches the payer missing an AA or a QZ.
Reporting does the second half of the job. Alongside the reports every subscription includes, Insights Plus adds specialist denial trend analysis by CPT code. You see 01682 producing repeat CO-4 or CO-16 denials while it is still a handful of claims, not a quarter of lost revenue.
Running clinical work and billing in one platform removes the handoff that causes most time-unit errors. Pabau’s practice management workflows read the start and stop times straight from the anesthesia record. Its documentation templates capture the qualifying circumstances and seven-step attestations a clean claim needs.
Pro Tip
Set up a CPT 01682 claim filter in your billing dashboard each quarter. Compare the denial rate against the prior quarter. A rate above 8% on anesthesia codes usually points to a modifier problem or a documentation shortfall. Both are fixable with one targeted coder training session.
Conclusion
Nothing about 01682 is conceptually hard. What makes it deny is the number of small things that all have to be right at once. Most of those claims get one pair of eyes.
So stop treating it as a coding problem and treat it as a workflow one. Put the modifier prompt in front of the biller. Pull time units from the anesthesia record instead of retyping them, and read your denial codes monthly. Practices that do this catch the error before submission, which is the only point where fixing it is free.
The trade-off worth remembering is that every control you add slows the biller down slightly. A CO-16 rework costs far more. Book a demo to see how Pabau builds those controls into anesthesia billing for your team.
Continue your research
Billing anesthesia for other reconstructive work? CPT code 21215 walks through a bone graft claim, including the documentation payers ask for.
Need the crosswalk for a different surgical family? CPT code 21255 shows how a reconstruction code maps to its own anesthesia code and units.
Working on graft and wound repair claims? CPT code 15274 covers surface area measurement, the detail that drives most denials.
Struggling with laterality and encounter characters? ICD-10 code S23.110A is a clear worked example of the seventh character.
Frequently asked questions
What is CPT code 01682 used for?
CPT code 01682 is the anesthesia billing code for shoulder arthroplasty. It covers total shoulder replacement, hemiarthroplasty, and revision arthroplasty. Physician anesthesiologists and CRNAs use it to bill anesthesia management during those surgeries.
How many base units does CPT 01682 have?
CPT 01682 carries a base unit value of 10 units under the ASA Relative Value Guide. Verify the current RVG edition before billing, since values can be revised. Base units are added to time units and any modifying units, then multiplied by the anesthesia conversion factor.
Which modifiers go with anesthesia code 01682?
The right modifier depends on who provided the service. AA means the anesthesiologist personally performed it, and QY means a physician directed one CRNA. QK covers a physician directing two to four concurrent CRNAs, and AD covers more than four. QX marks a medically directed CRNA, while QZ marks a CRNA working without medical direction. One provider-type modifier is mandatory on every claim.
Does Medicare cover 01682?
Yes. Medicare covers 01682 when medically necessary anesthesia is provided for a covered shoulder arthroplasty. Payment uses the CMS anesthesia conversion factor, updated each year in the Physician Fee Schedule final rule. Locality adjustments apply, and the claim needs a valid provider-type modifier and a supported diagnosis code.
Can a CRNA bill 01682?
Yes, a CRNA can bill 01682. A CRNA working without medical direction appends modifier QZ, and a CRNA under physician medical direction appends QX. Independent CRNA billing rights vary by state scope-of-practice law. They also depend on whether the state opted out of Medicare’s physician supervision requirement, so check before billing with QZ.
How is reimbursement calculated for 01682?
Reimbursement equals base units plus time units plus modifying units, multiplied by the Medicare anesthesia conversion factor. For 01682 with 10 base units and a 120-minute procedure, that is 18 units times the current conversion factor. Locality adjustments and payer-specific rates change the final figure, so check the current CMS Physician Fee Schedule.
