CPT code 57421: Colposcopy, entire vagina with biopsy2026 Medicare rate & RVUs

Report this service when colposcopic examination of the entire vagina, including the cervix if present, includes directed biopsy of vaginal or cervical tissue.

CMS RVU26DEffective Oct 1, 2026109 payment localities2.3K Medicare services in 2024

Medicare pays $182.03 for 57421 nationally in the office and $109.22 in a hospital or facility. Local office rates run $161.67–$225.94.

Medicare rate · 57421

Colposcopy, entire vagina with biopsy

Office or facility?

Work RVUs
2.15
Total RVUs
5.45
Global days
000

National rate · 2026

$182.03

Office setting, before claim adjustments.

See every locality for 57421 →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.

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What 57421 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 57421 covers

A clinician uses a colposcope to inspect the entire vaginal canal and, when present, the cervix, then takes directed tissue samples from abnormal areas. Gynecologists commonly perform this in an office or outpatient facility when evaluating abnormal vaginal cytology, suspected vaginal intraepithelial lesions, or visible lesions requiring histologic assessment, including in patients who have had a hysterectomy.

Report the service when the examination covers the entire vagina and includes biopsy; the code accounts for the colposcopic examination and biopsy work. The record should identify the examined anatomy, the abnormal area sampled, and the clinical reason for sampling. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. For multiple procedures in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery for this service, 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 57421 pays more and less

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

109 payment localities

$161.67 to $225.94

$161.67$193.81$225.94
One dot per payment locality, office / nonfacility. Hover a dot to see the locality; select it to open that rate.

109 of 109 payment localities

57421 office and facility rates by payment locality
Payment localityOfficeFacility
Alabama$163.92$100.21
Alaska$217.89$140.35
Arizona$177.03$106.48
Arkansas$161.67$99.12
Atlanta, GA$186.61$112.63
Austin, TX$186.16$109.12
Bakersfield, CA$187.15$107.34
Baltimore area, MD$193.53$115.40
Beaumont, TX$172.38$106.12
Brazoria, TX$178.66$106.50

57421 rates by state

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

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.

$161.67

$217.89

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
57421 office rate range by state
State / territoryOffice rate rangeLocalities
AK$217.891
AL$163.921
AR$161.671
AZ$177.031
CA$185.98–$225.9429
CO$185.981
CT$193.821
DC$204.621
DE$179.821
FL$184.86–$207.433
GA$174.34–$186.612
GU$189.311
HI$189.311
IA$165.401
ID$166.951
IL$181.56–$201.194
IN$167.801
KS$165.841
KY$170.161
LA$170.38–$178.272
MA$185.43–$202.102
MD$182.76–$204.623
ME$169.04–$175.992
MI$175.48–$188.292
MN$174.951
MO$168.40–$177.453
MS$165.001
MT$182.011
NC$170.531
ND$173.701
NE$165.901
NH$184.231
NJ$195.12–$202.902
NM$176.871
NV$179.791
NY$173.06–$216.835
OH$173.781
OK$168.611
OR$177.48–$190.272
PA$173.38–$189.982
PR$182.881
RI$185.061
SC$172.621
SD$172.721
TN$166.791
TX$172.38–$187.218
UT$174.831
VA$176.28–$204.622
VI$182.881
VT$174.141
WA$184.71–$204.892
WI$168.291
WV$175.481
WY$178.391

How the 57421 rate is calculated

Each of 57421’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 · 57421

RVUs × geographic indexes × conversion factor

Office or facility?

Work2.15

2.15 RVUs× 1.000 GPCI

Practice expense2.88

2.88 RVUs× 1.000 GPCI

Malpractice0.42

0.42 RVUs× 1.000 GPCI

Adjusted RVUs

5.4500

Conversion factor

$33.4009

Medicare rate

$182.03

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

Payment rules and modifiers for 57421

The CMS indicators that decide how 57421 is paid alongside other services.

CMS payment indicators · 57421

Colposcopy, entire vagina with 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

57421 without 51 · national office

$182.03

Colposcopy, entire vagina with biopsy

57421-51 · Second procedure: 50%

$91.02

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

57421 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • 57421

    Colposcopy, entire vagina with biopsy2.15 wRVU

    $182.03

  • 57420

    Vaginal colposcopy, without vaginal biopsy1.56 wRVU

    $137.61−$44.42

  • 57455

    Cervical biopsy, colposcopy-guided biopsy1.94 wRVU

    $160.99−$21.04

  • 57454

    Cervical colposcopy, biopsy and endocervical curettage2.27 wRVU

    $166.00−$16.03

How to choose

57420Vaginal colposcopyWithout vaginal biopsy
Both cover colposcopy of the entire vagina, including the cervix if present. Choose 57421 when biopsy is performed; 57420 is for the examination without biopsy.
57455Cervical biopsyColposcopy-guided biopsy
57455 covers cervical colposcopy with biopsy. Use 57421 for colposcopic examination of the entire vagina with biopsy.
57454Cervical colposcopyBiopsy and endocervical curettage
57454 describes cervical colposcopy with biopsy and endocervical curettage; 57421 involves examination of the entire vagina with biopsy.

57421 billing questions

When should 57421 be selected instead of 57420?

Use 57421 when colposcopic examination of the entire vagina includes biopsy. Code 57420 describes the corresponding examination without biopsy.

Can the biopsy be reported separately from the colposcopy?

The biopsy is included in 57421 when performed as part of the colposcopic service. Document the sampled site and the reason for biopsy.

How does 57421 differ from 57455?

57421 covers examination of the entire vagina, with the cervix if present, and biopsy. 57455 is for cervical colposcopy with biopsy, rather than the entire-vagina examination.

Should modifier 50 be appended for biopsy on both sides?

No. The CMS bilateral adjustment does not apply, and modifier 50 is inappropriate for this service.

Can an assistant or co-surgeon be billed with 57421?

Medicare does not pay an assistant at surgery for this service. 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 57421PPRRVU2026_Oct_nonQPP.csv, line 6,487 (RVU26D)

Open CMS sourceHow we calculate rates

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