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CPT 83735 Medicare payment status

Magnesium Laboratory Test

Priced under CLFS

83735 · PFS Q4 2020 · Historical

Status X is not separately payable under the PFS.

View applicable payment rules
View CMS source and method

CMS RVU20DOctober 1 – December 31, 2020

PFS status evidence

Inspect PFS status evidence
Code
83735
Release
Q4 2020, revision 1
Result
Priced under CLFS

Citations

  • Shows this code’s PFS status (X). Result: Priced under CLFS.

    Physician relative value file (PPRRVU)CMS RVU20DOctober 1 – December 31, 2020

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

    PPRRVU20_OCT.csv row 14,617 in rvu20d-updated-11232020.zip

    In the CMS file

    Loading rows 14,615–14,619 of PPRRVU20_OCT.csv…

    Download rvu20d-updated-11232020.zip from CMS File fingerprint 504fd19a9bc1d2eeebb290adac2d7de6c56d4e86cde7532df1862fe42494d319

Report a problem

CPT 83735 has no published national rate. It carries status X (statutory exclusion) in the Q4 2020 release. The statutory definition of physician services does not include this item. The blank amount means unpriced, not $0.

Why is there no national PFS amount for 83735?

Its status indicator is X (statutory exclusion). The statutory definition of physician services does not include this item. Status X is not separately payable under the PFS.

Which billing rules and modifiers apply? Copy link

CMS's surgical and split-billing indicators don't adjust 83735's amount.

Global surgery period XXX (does not apply).

Why would a Medicare claim for 83735 be denied or paid less?

These come from CMS indicators on this page, not general billing advice.

  • Its status indicator is X (statutory exclusion)—The statutory definition of physician services does not include this item. See status indicators

Payer-specific coverage and documentation rules live outside these files, so a claim that clears every check here can still be denied on other grounds.

CMS RVU20DOctober 1 – December 31, 2020

Can you bill it with another code? Copy link

This code

83735

See every current NCCI pair for 83735 →

Source & method Copy link

  1. 01 PPRRVU20_OCT.csv · Q4 2020 (RVU20D) · row 14,617—status X, RVUs limits
    Effective
    October 1 – December 31, 2020
    Locator
    PPRRVU20_OCT.csv in rvu20d-updated-11232020.zip · row 14,617 of 17,346 · via CMS
    Fields read
    Status X (col 4)
    SHA-256 504fd19a9bc1d2ee…
    Doesn’t establish
    A locality-adjusted allowed amount, or the payment after sequestration. National baselines use GPCI 1.000 and exclude sequestration.
    Note
    Whether a national amount exists depends on the status and CMS’s payment instructions; blank RVUs are never treated as zero.
  2. 02 Physician & Other Practitioners · CY2024—volume and who bills it limits
    Effective
    Calendar-year snapshot, on a different cycle from the Q4 2020 fee schedule
    Doesn’t establish
    Medicare Advantage, Medicaid or commercial volume, or the exact place of service: CMS publishes only the facility vs non-facility split, so the Office (non-facility) share does not identify urgent care or any other specific setting.
    Note
    The dataset suppresses rows under 11 beneficiaries. Specialty groups with fewer than 30 observed clinicians are omitted, so the shares can fall short of 100%.

Cite this rate

CPT 83735 National PFS baseline: No national PFS rate (Q4 2020; participating physician; whole service; GPCI 1.000; sequestration excluded). CMS RVU20D, PPRRVU20_OCT.csv row 14,617. Localis. https://localishealth.com/cpt/83735/2020/D

Past releases are never edited, so the citation stays checkable after CMS publishes a newer one. Methodology · Plain-text summary · JSON

How has it changed? Copy link

— Office (non-facility) and — Facility since Jan 1, 2013.

  1. Jan 1, 2024 – Mar 8, 2024 · Superseded revision

    Q1 2024 rev 1

    Revision 1, later corrected by CMS
    Office
    —
    Facility
    —
  2. Jan 1, 2013 – present

    Q1 2013

    Still in effect · 53 releases at this rate
    Office
    —
    Facility
    —

    Q1 2013 Jan 1, 2013 – Mar 31, 2013 · Q2 2013 Apr 1, 2013 – Jun 30, 2013 · Q2 2014 Apr 1, 2014 – Jun 30, 2014 · Q3 2014 Jul 1, 2014 – Sep 30, 2014 · Q4 2014 Oct 1, 2014 – Dec 31, 2014 · Q1 2015 Jan 1, 2015 – Mar 31, 2015 · Q2 2015 Apr 1, 2015 – Jun 30, 2015 · Q3 2015 Jul 1, 2015 – Sep 30, 2015 · Q4 2015 Oct 1, 2015 – Dec 31, 2015 · Q1 2016 Jan 1, 2016 – Mar 31, 2016 · Q2 2016 Apr 1, 2016 – Jun 30, 2016 · Q3 2016 Jul 1, 2016 – Sep 30, 2016 · Q4 2016 Oct 1, 2016 – Dec 31, 2016 · Q1 2017 Jan 1, 2017 – Mar 31, 2017 · Q2 2017 Apr 1, 2017 – Jun 30, 2017 · Q3 2017 Jul 1, 2017 – Sep 30, 2017 · Q4 2017 Oct 1, 2017 – Dec 31, 2017 · Q1 2018 Jan 1, 2018 – Mar 31, 2018 · Q2 2018 Apr 1, 2018 – Jun 30, 2018 · Q3 2018 Jul 1, 2018 – Sep 30, 2018 · Q4 2018 Oct 1, 2018 – Dec 31, 2018 · Q1 2019 Jan 1, 2019 – Mar 31, 2019 · Q2 2019 Apr 1, 2019 – Jun 30, 2019 · Q3 2019 Jul 1, 2019 – Sep 30, 2019 · Q4 2019 Oct 1, 2019 – Dec 31, 2019 · Q1 2020 Jan 1, 2020 – Mar 31, 2020 · Q2 2020 Apr 1, 2020 – Jun 30, 2020 · Q3 2020 Jul 1, 2020 – Sep 30, 2020 · Q4 2020 Oct 1, 2020 – Dec 31, 2020 · Q1 2021 Jan 1, 2021 – Mar 31, 2021 · Q2 2021 Apr 1, 2021 – Jun 30, 2021 · Q3 2021 Jul 1, 2021 – Sep 30, 2021 · Q4 2021 Oct 1, 2021 – Dec 31, 2021 · Q1 2022 Jan 1, 2022 – Mar 31, 2022 · Q2 2022 Apr 1, 2022 – Jun 30, 2022 · Q3 2022 Jul 1, 2022 – Sep 30, 2022 · Q4 2022 Oct 1, 2022 – Dec 31, 2022 · Q1 2023 Jan 1, 2023 – Mar 31, 2023 · Q2 2023 Apr 1, 2023 – Jun 30, 2023 · Q3 2023 Jul 1, 2023 – Sep 30, 2023 · Q4 2023 Oct 1, 2023 – Dec 31, 2023 · Q1 2024 Mar 9, 2024 – Mar 31, 2024 · Q2 2024 Apr 1, 2024 – Jun 30, 2024 · Q3 2024 Jul 1, 2024 – Sep 30, 2024 · Q4 2024 Oct 1, 2024 – Dec 31, 2024 · Q1 2025 Jan 1, 2025 – Mar 31, 2025 · Q2 2025 Apr 1, 2025 – Jun 30, 2025 · Q3 2025 Jul 1, 2025 – Sep 30, 2025 · Q4 2025 Oct 1, 2025 – Dec 31, 2025 · Q1 2026 Jan 1, 2026 – Mar 31, 2026 · Q2 2026 Apr 1, 2026 – Jun 30, 2026 · Q3 2026 Jul 1, 2026 – Sep 30, 2026 · Q4 2026 Oct 1, 2026 – present

    Earliest release in this history.

National baseline (GPCI 1.000), before sequestration.

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.

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Usage and related codes Copy link

In CY2024, 83735 ranked #101 of the 7,879 CPT codes billed to Medicare that year, by patients served or total allowed dollars.

Services
3.5M
Allowed
$22.9M
Beneficiaries
1.9M

Who bills 83735 to Medicare

100% Office (non-facility) · 0% facility
  • Hematology/Oncology 27%
  • Internal Medicine 19%
  • Family Medicine 13%
  • NP/PA 12%
  • Pathology 9%

CY2024 Medicare fee-for-service, from the CMS Physician & Other Practitioners dataset (limits). Localis groups related codes for payment research; the grouping isn't the AMA's code families.