localis

Describe a service in plain words, or type a CPT/HCPCS code.

Calculator
Effective Jan 1, 2024 through Mar 8, 2024. This is revision 1—CMS published revision 2 with rates effective Mar 9, 2024 (posted Apr 1, 2024).

CPT 01656

Priced using anesthesia methodology

01656 · PFS Q1 2024 · Historical

Illustrative example

~$332.96

Source

Formula

(base_units + time_units) × anesthesia_cf

Localis calculated this from CMS’s published inputs. Select an underlined value to see where it comes from.

base_units
10
time_units
6
anesthesia_cf
20.81
amount
$332.96

time_units = time_minutes / 15, rounded to one decimal place.

The anesthesia conversion factor is CMS's published locality-adjusted value.

Citations

  • Supplies the RVUs and PFS status for this code and component.

    Physician relative value file (PPRRVU)

    Q1 2024 · revision 2

    Latest revision of this release

    Release period: March 9 – March 31, 2024

    Record details PPRRVU24_JAN.csv in rvu24ar-posted-04-01-2024.zip (row 6,019)
    hcpcs (col 1)
    01656
    status_code (col 4)
    J

    SHA-256: b6c71c98c3e26e2b217817da7000cc3516dc360a1c74d5ffd8f46bfa835f9741

    Original source file

  • Supplies the geographic adjustment factors for this locality.

    Geographic practice cost indices (GPCI)

    Q1 2024 · revision 2

    Latest revision of this release

    Release period: March 9 – March 31, 2024

    Record details GPCI2024.csv in rvu24ar-posted-04-01-2024.zip (row 99)
    work_gpci (col 5)
    1.011
    pe_gpci (col 6)
    1.007
    mp_gpci (col 7)
    0.877

    SHA-256: 4b92cf5fa9921e29a8149d07473a63e3b62e172742b2969d1dce9502162405c4

    Original source file

  • Supplies the dollar conversion factor used in the formula.

    Physician relative value file (PPRRVU)

    Q1 2024 · revision 2

    Latest revision of this release

    Release period: March 9 – March 31, 2024

    Record details PPRRVU24_JAN.csv in rvu24ar-posted-04-01-2024.zip (row 11)
    conversion_factor (col 25)
    33.2875

    SHA-256: b6c71c98c3e26e2b217817da7000cc3516dc360a1c74d5ffd8f46bfa835f9741

    Original source file

  • Anesthesia conversion factors (ANES)

    Q1 2024 · revision 2

    Latest revision of this release

    Release period: March 9 – March 31, 2024

    Record details ANES2024.csv in rvu24ar-posted-04-01-2024.zip (row 97)
    non_qpp_conversion_factor (col 4)
    20.81

    SHA-256: c3b5156943ad766b2ea329aed645743dc68d526171ebad31c4a36e74a60c9e05

    Original source file

  • Anesthesia base units by CPT code

    Q1 2022 · revision 1

    Latest revision of this release

    Release period: January 1 – March 31, 2022

    Record details Section 508 compliant version of CY_2022_Anesthesia_Base_Units_110921.txt in 2022-anesthesia-base-units-cpt-code.zip (row 216)
    base_units (col 2)
    10

    SHA-256: ebbf7d42ecaf759c280f0b9fced5ea71dd16505a0563bb7c942cee068c797fde

    Original source file

90-minute example case in Dallas, TX

Anesthesia has no single national rate—payment is (base units + time units) × the locality's anesthesia conversion factor. This example is before sequestration. Enter the service-location ZIP and case length for a local estimate.

Base units 10—set by CMS for this code and the same in every locality. One time unit is 15 minutes, rounded to one decimal, so a 90-minute case adds 6 time units.

View CMS source and method

CPT 01656 is an anesthesia code, so Medicare has no single national rate: payment is (base units + time units) × the locality's anesthesia conversion factor—for example, about $332.96 for a 90-minute case in Dallas, TX under the Q1 2024 release, before sequestration.

Amount evidence: base units, time units, and the locality conversion factor, shown in the estimate. The PFS row shows this code is priced as anesthesia.

Inspect PFS status evidence
Code
01656
Release
Q1 2024, revision 1
Result
Priced using anesthesia methodology

Citations

  • Shows this code’s PFS status (J). Result: Priced using anesthesia methodology.

    Physician relative value file (PPRRVU)

    Q1 2024 · revision 1

    Superseded revision

    Release period: January 1 – March 8, 2024

    This PFS record alone does not establish a $0 allowance or a coverage determination. Any amount from another schedule needs its own evidence.

    Record details PPRRVU24_JAN.csv in rvu24a-updated-04-01-2024.zip (row 6,019)
    hcpcs (col 1)
    01656
    modifier (col 2)
    blank
    status_code (col 4)
    J

    SHA-256: 034f3aa88a63e6f7ca3859c09b3945dce139171a6fc5a710300fc7b815e9b65b

    Original source file

Plain-text summary

Why is there no national PFS amount for 01656?

Its status indicator is J (anesthesia). Medicare prices this under the anesthesia formula—(base units + time units) × the locality anesthesia conversion factor—not the standard RVU formula. Choose a locality to see that factor.

Payment considerations Copy link

Here are the inputs and payment rules that apply to this code. Each link takes you to the detail below.

Other payment indicators (10)

Facility/non-facility: Not determined, Professional/technical component: Does not apply, Bilateral adjustment: Does not apply, Multiple-procedure reduction: Does not apply, Assistant/co-surgeon treatment: Does not apply, Global surgery: Does not apply, NCCI same-day edits: Not determined, MUE behavior: Not determined, Other fee-schedule routing: Does not apply, Contractor pricing: Does not apply.

Can you bill it with another code? Copy link

Check a pair of codes Copy link

Enter a second CPT or HCPCS code billed on the same date of service. We'll check the current NCCI procedure-to-procedure edit for the pair.

See every current NCCI pair for 01656 →

How has it changed? Copy link

When does this rate change?

CMS publishes a fee schedule release every quarter (January, April, July, October), and each is versioned here. See what changed each release, or get an email when a new release moves rates.

Sources: CMS Medicare Physician Fee Schedule Relative Value Files.

Usage and related codes Copy link

How often 01656 is billed Copy link

Across Original Medicare in CY2024, 01656 ranked #4,049 of the 7,879 CPT codes billed to Medicare that year, by patients served or total allowed dollars.

Beneficiaries
698
Office + facility beneficiaries combined
Services
1,025
Times it was billed
Allowed
$419,600
Total Medicare allowed dollars
Compare: ↑ #4,047 more popular · 28450 ↓ #4,054 less popular · 95961

2024 Medicare fee-for-service national totals. They exclude Medicare Advantage, Medicaid and commercial volume, so real-world use runs higher. This is a calendar-year snapshot from the CMS Physician & Other Practitioners dataset, on a different cycle from the Q1 2024 fee schedule above.

Did this answer your question about CPT 01656?

We're building this out in the open. Tell us what you were actually trying to work out and we'll either answer you directly or build the page that does.

Did this page answer your question?

Source & method

Show sources

The anesthesia estimate uses the base units, case length, and locality conversion factor shown beside it. The PFS file shows this code is priced as anesthesia. Past releases are never edited, so these sources stay valid after CMS publishes a newer one. Our methodology explains sourcing, parsing, versioning, and how we cross-check claims before we publish them.

Physician relative value file (Q1 2024) · rvu24a-updated-04-01-2024.zip (PPRRVU24_JAN.csv row 6,019)

Use the (i) buttons next to each amount above for the exact row, columns, and math.

Cite this rate

The citation names the release, so anyone can check it even after CMS publishes a newer one.

CPT 01656 National PFS baseline: No national PFS rate (Q1 2024; participating; whole service; GPCI 1.000; sequestration excluded). Localis. https://localishealth.com/cpt/01656/2024/A/1