FeeBase
Log inGet started
Menu

CPT 59001: AmniocentesisMedicare rate & RVUs

Report therapeutic amniocentesis when excess amniotic fluid is withdrawn, commonly to manage symptomatic polyhydramnios rather than obtain a diagnostic sample.

CMS RVU26DEffective Oct 1, 2026109 payment localities

Medicare pays $159.66 for 59001 nationally in a facility.

Medicare rate · 59001

Amniocentesis

Swap in your local Medicare rate.

Work RVUs
2.93
Total RVUs
4.78
Global days
000

National rate · 2026

$159.66

Facility setting, before claim adjustments.

See every locality for 59001 →

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 59001 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 59001 covers

An obstetrician or maternal-fetal medicine specialist uses a needle to remove excess amniotic fluid from the amniotic cavity. The procedure is commonly performed with ultrasound guidance in a hospital or other procedural setting for symptomatic polyhydramnios. Its purpose is fluid reduction, not collection of a sample for prenatal diagnosis.

Choose this code when the documented service is therapeutic fluid removal. The record should support the indication, the amniotic cavity as the treatment site, and the procedure performed. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple-procedure reduction. Modifier 50 is inappropriate. CMS does not pay an assistant at surgery; 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 59001 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

59001 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$142.33
Alaska*Unavailable$196.64
ArizonaUnavailable$154.23
ArkansasUnavailable$140.26
AtlantaUnavailable$166.69
AustinUnavailable$158.09
BakersfieldUnavailable$152.32
Baltimore/Surr. CntysUnavailable$170.83
BeaumontUnavailable$154.69
BrazoriaUnavailable$153.33

59001 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

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
59001 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 59001 rate is calculated

Each of 59001’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 · 59001

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 2.93Practice expense 0.92Malpractice 0.93

4.7800 adjusted RVUs×$33.4009 conversion factor=$159.66

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

Payment rules and modifiers for 59001

The CMS indicators that decide how 59001 is paid alongside other services.

CMS payment indicators · 59001

Amniocentesis

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

59001 without 51 · national facility

$159.66

Amniocentesis

59001-51 · Second procedure: 50%

$79.83

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

59001 compared with similar codes

Compare codes

59001 vs 59000 vs 59074 vs 59070: national Medicare rates

Swap in your local Medicare rate.

  • 59001
    Amniocentesis · 2.93 wRVU
    —
  • 59000
    Amniocentesis · 1.27 wRVU
    $119.58
  • 59074
    Fetal fluid drainage · 5.11 wRVU
    $388.45
  • 59070
    Amnioinfusion · 5.11 wRVU
    $403.48

How to choose

59000Amniocentesis
59000 is for diagnostic fluid sampling. Use 59001 when the purpose is to remove excess amniotic fluid therapeutically.
59074Fetal fluid drainage
59074 addresses drainage of a fetal fluid collection with ultrasound guidance; 59001 reduces fluid in the amniotic cavity.
59070Amnioinfusion
59070 is for transabdominal amnioinfusion, which adds fluid. 59001 removes excess amniotic fluid.

Codes related to 59001

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

Codes related to 59001
CodeHow it relatesNational office range
Same family
59000AmniocentesisDiagnostic amniocentesis; distinguishes fluid sampling from therapeutic fluid reduction.$103.99–$146.02
Used instead
59074Fetal fluid drainageConsider for ultrasound-guided drainage when the fluid collection is fetal, not excess amniotic fluid.$339.02–$478.39

59001 billing questions

How does this differ from 59000?

Use 59001 for therapeutic removal of excess amniotic fluid. Code 59000 is for diagnostic amniocentesis, where fluid is sampled for testing.

What should the record support?

Document the therapeutic indication, that fluid was removed from the amniotic cavity, and the procedure performed. The note should make clear that the service was fluid reduction rather than diagnostic sampling.

Is modifier 50 appropriate?

No. CMS identifies bilateral adjustment as inappropriate for this code.

How does the 0-day global period affect same-day care?

Same-day preoperative and postoperative care is included in the procedure's payment.

What happens when another procedure is performed in the same session?

Under the standard multiple-procedure rule, the highest-valued procedure is paid in full and other procedures are reduced. CMS does not pay an assistant at surgery, and co-surgeons and team surgery are not permitted.

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 59001PPRRVU2026_Oct_nonQPP.csv, line 6,625 (RVU26D)

Open CMS sourceHow we calculate rates

Fee sheets

Put 59001 and the rest of your codes on one sheet

Current Medicare rates for every code you bill at your locality, with what changed since last quarter.

Get a fee sheetOr price your code list free →