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Billing code 64795: Nerve biopsyMedicare rate & RVUs

Report a nerve biopsy when a surgeon removes peripheral nerve tissue for diagnostic evaluation, such as investigating suspected vasculitic neuropathy.

CMS RVU26DEffective Oct 1, 2026109 payment localities547 Medicare services in 2024

Medicare pays $186.38 for 64795 nationally in a facility.

Medicare rate · 64795

Nerve biopsy

Swap in your local Medicare rate.

Work RVUs
2.93
Total RVUs
5.58
Global days
000

National rate · 2026

$186.38

Facility setting, before claim adjustments.

See every locality for 64795 → · Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

On this page 10 sections
  1. Medicare rate
  2. What 64795 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 64795 covers

A surgeon obtains a sample of peripheral nerve tissue so it can be examined to help diagnose a neuropathy. A sural nerve biopsy is a familiar example in the evaluation of suspected vasculitic neuropathy. The service is generally performed by a surgeon, such as a neurosurgeon or peripheral nerve surgeon, in an operating or procedure setting when tissue sampling is clinically indicated.

Select this code for diagnostic nerve tissue sampling, not removal of a nerve lesion as the treatment itself. The operative report should identify the nerve sampled, the diagnostic reason, and the biopsy performed. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Modifier 50 is inappropriate for this service. Medicare does not pay an assistant at surgery, and co-surgeons and team surgery are not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 64795 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

64795 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$166.23
Alaska*Unavailable$225.95
ArizonaUnavailable$180.31
ArkansasUnavailable$163.79
AtlantaUnavailable$193.52
AustinUnavailable$186.65
BakersfieldUnavailable$182.42
Baltimore/Surr. CntysUnavailable$199.22
BeaumontUnavailable$178.97
BrazoriaUnavailable$180.16

64795 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
64795 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

How the 64795 rate is calculated

Each of 64795’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

How the rate is built · 64795

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 2.93Practice expense 1.77Malpractice 0.88

5.5800 adjusted RVUs×$33.4009 conversion factor=$186.38

All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.

Payment rules and modifiers for 64795

The CMS indicators that decide how 64795 is paid alongside other services.

CMS payment indicators · 64795

Nerve biopsy

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

64795 without 51 · national facility

$186.38

Nerve biopsy

64795-51 · Second procedure: 50%

$93.19

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

64795 compared with similar codes

Compare codes

64795 vs 64784 vs 64790 vs 64792: national Medicare rates

Swap in your local Medicare rate.

  • 64795
    Nerve biopsy · 2.93 wRVU
    —
  • 64784
    Neuroma excision · 10.35 wRVU
    —
  • 64790
    Nerve tumor removal · 11.8 wRVU
    —
  • 64792
    Neuroma excision · 15.46 wRVU
    —

How to choose

64784Neuroma excision
Use 64795 for diagnostic nerve tissue sampling. Use 64784 when the procedure removes a nerve lesion rather than obtaining a biopsy.
64790Nerve tumor removal
64795 represents a diagnostic sample; 64790 describes removal of a nerve lesion.
64792Neuroma excision
Choose 64795 for biopsy sampling. Choose 64792 when the documented procedure is nerve-lesion removal.

Codes related to 64795

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 64795
CodeHow it relatesNational office range
Used instead
64784Neuroma excisionConsider when the service removes a nerve lesion rather than sampling nerve tissue for diagnosis.No office rate
64790Nerve tumor removalA nerve-lesion removal code for a different procedure purpose than diagnostic biopsy.No office rate
64792Neuroma excisionRemoval of a nerve lesion is distinct from obtaining a diagnostic nerve sample.No office rate

64795 billing questions

When should I report a nerve biopsy instead of a nerve-lesion excision code?

Report 64795 when nerve tissue is sampled to establish a diagnosis. If the procedure removes a nerve lesion as treatment, use the code that describes that lesion and its location or type.

Is same-day preoperative or postoperative care included?

Yes. The 0-day global period includes same-day preoperative and postoperative care.

Can modifier 50 be used for biopsies on both sides?

No. CMS identifies bilateral adjustment as inappropriate for this code. Do not append modifier 50.

How does Medicare handle this service when other procedures are performed in the same session?

The highest-valued procedure is paid in full, and other procedures are subject to the standard 50% multiple-procedure reduction.

Can an assistant or co-surgeon be paid for the biopsy?

Medicare does not pay an assistant at surgery for this code. Co-surgeons and team surgery are not permitted.

What documentation supports reporting 64795?

Document the nerve sampled, the diagnostic indication, and the tissue-sampling procedure. The record should make clear that the purpose was diagnostic biopsy rather than therapeutic removal of a nerve lesion.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Show the CMS file lines behind this rate
RVUs for 64795PPRRVU2026_Oct_nonQPP.csv, line 7,240 (RVU26D)

Open CMS sourceHow we calculate rates

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