CPT code 59001: Amniocentesis2026 Medicare rate & RVUs in Alaska
Report therapeutic amniocentesis when excess amniotic fluid is withdrawn, commonly to manage symptomatic polyhydramnios rather than obtain a diagnostic sample.
CMS doesn’t publish an office rate for 59001 in Alaska.
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 9 sections
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.
59001 in Alaska*
| Payment locality | Office | Facility |
|---|---|---|
| Alaska* | Unavailable | $196.64 |
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
Work2.93
2.93 RVUs× 1.000 GPCI
Practice expense0.92
0.92 RVUs× 1.000 GPCI
Malpractice0.93
0.93 RVUs× 1.000 GPCI
Adjusted RVUs
4.7800
Conversion factor
$33.4009
Medicare rate
$159.66
Every GPCI starts 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
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician 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%).
59001 compared with similar codes
Compare codes · National
4 codes, side by side
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.
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
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