CPT code 25441: Arthroplasty with prosthetic replacement, distal radius
What is CPT code 25441? Definition and clinical description CPT code 25441 is us...
Last Updated: August 20, 2026
Key takeaways
CPT code 20936 is an add-on code for local autograft harvesting during spine surgery. The bone comes from the same incision, such as rib, spinous process, or laminar fragments.
Medicare assigns 20936 status indicator B, so it carries 0.00 RVUs and is never paid separately. Its value sits inside the primary spinal procedure payment.
It must always be reported with a primary spinal procedure code and cannot be billed as a standalone service.
Sibling codes 20937 and 20938 are separately payable, which is why the same-incision test decides the code.
Pabau’s claims management software pre-fills the CMS-1500 from the treatment record, checks required fields, and submits through Claim.MD to thousands of US payers.
CPT code 20936 is an add-on code for local autograft in spine surgery, and it will never pay you a cent. The bone comes from the incision the surgeon already opened, whether that is rib, spinous process, or laminar fragments.
Medicare assigns status indicator B, so the code carries 0.00 RVUs and its value sits inside the primary spinal procedure.
Accuracy still matters. A wrong primary pairing can stall the claim that does pay, and an appeal on a bundled line just wastes staff hours. What follows is the descriptor, the primary pairings, the bundling edits, and the note that defends the line.
CPT code 20936 covers bone the surgeon already exposed
The code describes autograft for spine surgery only, and it includes the harvesting work. Qualifying bone is rib, spinous process, or laminar fragments taken without opening a second surgical site. That one condition, same incision, separates 20936 from every other autograft code in the family. Spine medical billing teams trip on it more than any other detail on the claim.
The American Medical Association (AMA) maintains 20936 as an add-on code, so it cannot stand alone on a claim. Every submission needs a reportable primary spinal procedure code beside it. Spine surgeons, orthopedic coders, and surgical billing teams meet this code often. It turns up most in ACDF, TLIF, and PLIF cases, where harvesting local bone is routine.
One phrase in the descriptor decides the claim
Here is the full AMA descriptor. Autograft for spine surgery only (includes harvesting the graft); local (eg, ribs, spinous process, or laminar fragments) obtained from same incision.
Read the last four words twice, because they carry the payment consequence. The code sits in the General Grafts (or Implants) section of the CPT code set. The table below holds the details a coder reaches for at claim prep.
Autograft or donor bone: where 20936 and 20930 split
These two codes sit in the same family and describe different graft types. Mixing them up is one of the most common errors in spine surgery billing. The table sorts out which one applies.
Reporting both 20936 and 20930 on the same claim is an NCCI bundling conflict. Verify the current CCI edit table via the CMS Physician Fee Schedule lookup before submitting, since bundling edit tables update quarterly.
When a spine case earns CPT 20936
Report 20936 when the surgeon harvests local autogenous bone from the same operative incision during a spinal procedure. The graft source is the trigger. Qualifying bone is already exposed inside the primary surgical field, rather than retrieved through a separate iliac crest or remote approach. Common qualifying scenarios include:
- Anterior cervical discectomy and fusion (ACDF) using rib fragments or local bone
- Transforaminal lumbar interbody fusion (TLIF) using laminar fragments removed during the decompression
- Posterior lumbar interbody fusion (PLIF) with spinous process bone graft
- Laminectomy with fusion where the resected lamina provides local graft material
- Posterior spinal fusion using local decorticated spinous process bone
One question settles the code in every one of those cases, and the operative note answers it.
Medical necessity rests on the primary procedure, not on the harvest. Confirm the diagnosis supports the fusion or the decompression before you add 20936 to the claim. The ICD-10 codes that usually carry these cases appear further down.
The primary codes 20936 rides along with
20936 must appear on the same claim as a primary spinal procedure code. The table lists the pairings that show up most in spine surgery billing. ACDF and TLIF codes are the frequent hosts.
Longer posterior constructs move from 22842 up to 22844, and anterior cervical cases often report 22554 as the primary fusion. Level count does not change the graft logic.
Use the AAPC Codify lookup to confirm add-on pairing rules and payer restrictions before you finalize the claim. Some payers accept a narrower set of primary pairings than Medicare does.
Status indicator B is why 20936 never pays
Medicare never pays CPT 20936 separately. The code carries status indicator B on the Medicare Physician Fee Schedule, which means it is always bundled into payment for another service.
In the CY2026 national physician fee schedule relative value file, every RVU component for 20936 is 0.00 and the global period is XXX. Payment for the graft harvest sits inside the primary spinal fusion or graft code you report alongside it.
This is not a 2026 change. CPT 20936 held status B in the CY2025 file as well, and CPT 20930 is bundled on the same basis. Any source quoting a payable rate for 20936 has not checked the fee schedule file.
Zero down every RVU column
The calculation ends before it starts. CMS assigns 20936 no work, practice expense, or malpractice value, in the facility or the non-facility column.
The CY2026 conversion factor is $33.4009, or $33.5675 for a qualifying APM participant. Neither figure produces a payment for this code, because both get multiplied by a total of 0.00. Watch for articles citing $32.35 as the 2026 factor, since $32.3465 was the CY2025 conversion factor.
Place of service does not move the number
The setting makes no difference to 20936. CMS lists 0.00 practice expense RVUs in both the facility and the non-facility column, so place of service changes nothing. Geographic practice cost indices change nothing either, because a GPCI adjustment applied to 0.00 still returns 0.00.
Report 20936 when the operative note supports it, since the line documents the work performed. Just keep it out of your revenue forecast. Reconcile the primary procedure line against the electronic remittance advice instead, because that is where the harvest gets paid.
Why 20937 and 20938 pay when 20936 does not
The two sibling autograft codes describe a second surgical field, and CMS values that extra work. Both carry status indicator A, which means separately payable.
That split is why the same-incision test carries so much weight. Harvesting through the primary incision counts as part of the exposure the surgeon has already made. Opening a separate site, usually the iliac crest, is distinct work with its own values. Code from what the operative note describes, never from which line pays more.
Pro Tip
Do not build a fee expectation around CPT 20936, and do not appeal a Medicare line that comes back bundled. Put the review effort into the primary procedure code instead, since that line carries the payment for the graft work. If the operative note describes a harvest through a separate incision, the correct code is 20937 or 20938, and both of those are separately payable.
No modifier turns 20936 into a payable line
Add-on codes carry modifier rules that differ from standalone procedure codes. The table covers the four that come up on 20936. Payer policies vary, so read the relevant LCD before you submit.
Modifiers on the 20936 line affect claim editing and payer reporting, and they do not change what Medicare pays. Reach for one only when a payer policy asks for it.
The bundling edits that trip spine claims
The National Correct Coding Initiative (NCCI) maintains bundling edits that define which code pairs cannot be reported together. 20936 carries several of those relationships. Under Medicare, status B already blocks separate payment, so these edits matter most for payers that price the code.
- CPT 20930 and 20936: These two codes describe different graft types for the same anatomical goal. Billing them together on the same claim for the same spinal procedure is an NCCI bundling conflict and will typically be denied.
- CPT 20938 and 20936: CPT 20938 covers structural cortical autograft from a separate incision, usually the iliac crest. It cannot be billed with 20936, because only one autograft harvesting method applies per procedure. The choice changes what the claim collects, since 20938 is separately payable and 20936 is not.
- Unbundling risk: Medicare treats the local harvest as bundled by design. No wording in the operative note makes 20936 separately payable. Document the harvest to support the primary code, not to unlock a second payment.
The CARC and RARC pairs on the remittance name the edit that fired. Our guide to denial codes shows which of them are correctable and which need an appeal.
How the claim moves with a bundled line on it
Follow one spine claim end to end and the bundled line stops looking odd. Five steps, in the order they happen.
- The surgeon dictates the note, naming the graft source and the incision it came through.
- The coder builds the claim with the primary spinal procedure first, then adds 20936 on its own line.
- Charge entry prices that line at your usual fee or at zero, depending on how your fee schedule is built.
- The clearinghouse validates the format and forwards the 837P transaction to the payer.
- The remittance pays the primary line and returns 20936 as bundled.
Take a thoracic fusion coded 22532, where the surgeon packs the interspace with bone taken through the same approach. Both codes go out together, the fusion gets paid, and the graft line comes back at zero. Post it as bundled and close the account. That line still earned its place, because it documents the work behind the code that paid.
Five denials that keep landing on 20936 claims
Denials on 20936 cluster around a short list of problems, and each one is catchable at the desk. Three areas cover most of them. Documentation completeness comes first, then primary code selection, then edit awareness.
One distinction saves a lot of wasted effort. A Medicare remittance showing no payment on the 20936 line is the fee schedule working as designed, not a denial to work. The patterns below apply to payers that price the code, and to the primary procedure line that carries the money.
- Missing same-incision documentation: The operative note must state explicitly that the graft was harvested from the same incision as the primary procedure. Without that language, the code selection is unsupported and the primary fusion line can be questioned too.
- Wrong primary procedure code: Pairing 20936 with a non-spinal primary code triggers an edit. Every primary code accepting 20936 must be a spinal procedure within the AMA’s allowed pairings.
- Billing 20930 and 20936 together: This NCCI conflict is among the most common edit triggers on spine surgery claims. Only one autograft code applies per procedure.
- Missing graft source identification: The operative note must identify the specific local bone source, meaning rib, spinous process, or laminar fragments. A generic reference to local bone graft without the anatomical source is not enough.
- Timely filing window: Medicare requires claims within 12 months of the service date, and commercial timely filing limits run shorter. A slow resubmission after a first denial is preventable revenue loss.
What the operative note has to say
The operative note is what defends a 20936 claim. Five elements make it complete:
- The specific graft source: rib, spinous process, or laminar fragments
- Explicit confirmation that the harvest went through the same incision as the primary procedure
- An estimate of the volume or quantity of bone harvested
- A statement of medical necessity for using autologous graft
- The identity of the primary spinal procedure being performed
Templated note fields for graft type and source keep a coder from hunting through the record at billing. When the note is dictated after the case, confirm all five elements before the claim goes out.
When an appeal is worth writing
Start by identifying the denial reason from the CARC code on the remittance advice. If the code says bundled and the payer is Medicare, there is no appeal to file. Status B is the correct outcome, not an error. For a commercial payer that does price 20936, confirm whether a modifier 59 override fits the clinical circumstances.
Gather the operative note, the primary procedure code, and any payer LCD on spinal autograft coverage. Draft a short letter citing the descriptor, the same-incision documentation, and the payer’s own policy. Submit inside the appeal window, typically 60 to 120 days from the denial date. Diary that deadline, because a late appeal closes the file.
The diagnoses that carry these spine cases
The diagnosis codes on a spine claim support the primary fusion or decompression, not the graft harvest. CPT 20936 has no medical necessity test of its own, because it has no separate payment. The codes below are the ones that most often carry these cases.
Cervical cases use the M50.1 series for cervical disc disorders with radiculopathy rather than the lumbar codes above. Code to the highest level of specificity in every case, since several parent codes in this range are not billable alone. M48.06 is the common trap, because a claim needs M48.061 or M48.062. Check current lists on the CMS ICD-10 codes page.
How the rest of the 20930 to 20938 family divides
20936 sits in a small family covering autograft and allograft for spinal surgery. Knowing the whole family prevents miscoding, since the right add-on changes with the graft’s source and shape. Audit all five codes once a year against current AMA guidance.
Two axes decide which code applies. Structural or morselized is the first, same incision or separate is the second. Teach the coding team both and this family stops causing trouble.
Pro Tip
Audit your spine surgery claims quarterly across the 20930-20938 family. Look specifically for cases where 20938 was billed but the operative note describes only a local laminar or spinous process harvest. That mismatch swaps a 0.00 RVU code for a 4.89 RVU code, which makes it both a frequent audit finding and a correctable overpayment.
Run this check before the claim goes out
Six quick checks catch the problems above while the claim is still yours to fix.
- The note names the graft source: rib, spinous process, or laminar fragments.
- The note states that the harvest came through the primary incision.
- A reportable primary spinal procedure code sits on the claim.
- Neither 20930 nor 20938 appears on the same claim as 20936.
- Modifier 51 is nowhere near the 20936 line.
- The diagnosis supports the fusion or the decompression.
Build those into your clean claim scrubbing routine and the 20936 line stops generating work for the billing team.
How Pabau keeps a multi-code spine claim clean
Spine billing carries more lines than almost any other area of the CPT set. One case can involve a primary fusion code, an instrumentation add-on, an interbody device code, and a graft code. Each line has to reach the payer exactly as the coder selected it. Retyping codes into a claim form is where that breaks down.
Practice management software like Pabau covers the submission side of that work. Its claims management software pre-fills the CMS-1500 from the treatment record, so the coded lines carry through without retyping. Code lookup libraries sit in the billing screen, and required-field validation holds a claim back when data is missing.
The Claim.MD integration then routes the finished claim to thousands of US payers as an 837P transaction. Eligibility checks and ERA return land in the same screen, so a spine case gets reconciled where it was billed.
A spine practice rarely bills only surgery. Groups running in-house physical therapy or sports medicine services keep those claims in the same queue, so one remittance screen covers the whole practice.
Every submission produces an 837 file that meets current HIPAA transaction standards, and the remittance posts back against the original invoice. Staff stop rebuilding the same claim for each payer.
Submit spine claims without retyping codes
Pabau pre-fills the CMS-1500 from the treatment record, checks the required fields, and submits through Claim.MD to thousands of US payers. See how a multi-code spine claim moves in a live demo.
Conclusion
CPT code 20936 records a specific piece of work, local bone harvested through the incision the surgeon already opened. Under Medicare it carries no payment of its own, so it earns its place through accuracy rather than revenue. The primary code beside it and the note behind it are what protect the money.
The same-incision test is the one place this decision moves money, since 20937 and 20938 are separately payable. Read the note, code what it describes, and leave the bundled line alone. Pabau carries the coded record into a CMS-1500, checks the required fields, and sends it out through Claim.MD. Book a demo to see how your spine claims would move.
Continue your research
Coding a multi-level fracture repair? CPT code 22328 covers the add-on that reports each additional vertebra treated in the same session.
Billing a second vertebroplasty level? CPT code 22512 walks through the add-on for each additional thoracic or lumbar body.
Harvesting a graft that is not bone? CPT code 20922 sets out how a fascia lata graft is reported and documented.
Operative notes dictated after the case? Best medical transcription software compares the tools that turn surgical dictation into a usable note.
Frequently asked questions
How many times can CPT 20936 be reported in one surgery?
Report it once per operative session, however many levels the surgeon fuses. The 20930 to 20938 codes are reported one time per spinal procedure, not once per interspace. A quantity above one on a bundled line only invites an edit.
Does CPT 20936 apply outside spine surgery?
No. The descriptor limits 20936 to spine surgery, so a harvest for any other site needs a different code. Bone grafts outside the spine fall to 20900 or 20902, depending on how much bone the surgeon takes.
Do commercial payers ever pay for CPT 20936?
Some price it, and Medicare never does. Check the contract and the fee schedule before you expect payment, because bundling rules vary outside Medicare. Plans that follow the Medicare fee schedule apply status B and bundle the line.
Does CPT 20936 have a global period?
No. The fee schedule assigns 20936 a global period of XXX, so the global surgery concept does not apply. Post-operative visits fall under the primary spinal procedure’s global period instead.
Is CPT 20936 still an active code in 2026?
Yes. 20936 is active in 2026, and the CY2026 Medicare fee schedule file still shows it as status indicator B for that year. The descriptor is unchanged, so the same-incision test still decides the code.
