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HCPCS E0424 · Level II · DME code

E0424: Stationary compressed gaseous oxygen system, rental; includes container, contents, HCPCS Level II DME code

Compiled from CMS files by the QuickIntell RCM Editorial Team · Data effective · Method: reference methodology · Report a data correction

Data currency: HCPCS Level II file: October 2026 (effective October 1, 2026); DMEPOS fee schedule: DME26-D (October 2026) (effective October 1, 2026); NCCI MUE tables: 2026 Q4 (effective October 1, 2026); NCCI PTP edits: v323r0 (2026 Q4) (effective October 1, 2026); OPPS Addendum B: October 2026 (effective October 1, 2026); Medicare Coverage Database LCD export: MCD release October 8, 2026 (effective October 4, 2026). Next CMS release: January 1, 2027 (quarterly update) for the HCPCS Level II file and DMEPOS fee schedule and NCCI MUE tables and NCCI PTP edits and OPPS Addendum B; weekly, every Thursday for the Medicare Coverage Database LCD export.

Key facts for E0424

Medicare payment
$94.56 to $101.12
DMEPOS non-rural state fees (RR)
Coverage code
D
special coverage instructions apply
DME supplier MUE
1
MAI 2
OPPS status
SI Y
Non-implantable DME
NCCI PTP pairs
0
practitioner file
LCDs and articles
1 / 0

TL;DR

E0424 is a Level II code from the E section (durable medical equipment), in use since 1993: "Stationary compressed gaseous oxygen system, rental; includes container, contents, regulator, flowmeter, humidifier, nebulizer, cannula or mask, and tubing". E0424 is paid from the DMEPOS fee schedule as oxygen and oxygen equipment (OX): RR (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16; RR-QB (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16; RR-QF (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16, October 2026. MUE limits for E0424: practitioner 0 (MAI 3, CMS Policy); hospital outpatient 0 (MAI 3, CMS Policy); DME supplier 1 (MAI 2, Code Descriptor / CPT Instruction). 1 active LCD lists E0424: L33797 (Oxygen and Oxygen Equipment). OPPS status indicator Y: Non-implantable DME. HCPCS record: BETOS D1C (oxygen and supplies); pricing indicator 33; type of service R (rental of DME). Nearby codes: E0431, E0443, E0446, E0465.

E0424 descriptor and code status

The October 2026 HCPCS Level II file describes E0424 as “Stationary compressed gaseous oxygen system, rental; includes container, contents, regulator, flowmeter, humidifier, nebulizer, cannula or mask, and tubing”. It sits in the E section (durable medical equipment), listed with the other E codes. Although searches often call it the "E0424 CPT code", E0424 is a HCPCS Level II code maintained by CMS, not an AMA CPT code; both go in the same procedure-code field on the claim.

HCPCS file attributes of E0424
FieldValue
Short descriptorStationary compressed gas 02
Added to HCPCS1993-01-01
Last actionN (no maintenance), effective 2001-01-01
Coverage codeD: special coverage instructions apply
Pricing indicator33: DMEPOS oxygen and oxygen equipment (floors and ceilings)
BETOS categoryD1C: oxygen and supplies
Type of serviceR: rental of DME

Medicare payment for E0424

E0424 is paid from the DMEPOS fee schedule as oxygen and oxygen equipment (OX): RR (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16; RR-QB (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16; RR-QF (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16, October 2026. The amounts below are national figures from the October 2026 CMS files; the contractor applies the locality, rural or state adjustment and the beneficiary's cost sharing.

DMEPOS fee schedule (DME26-D)

Jurisdiction D (DME MAC), payment category OX (oxygen and oxygen equipment). Fees are set per state; AK, HI, PR and VI are not subject to the national ceiling and floor and are listed separately. A rural fee applies only in ZIP codes on the CMS rural ZIP list.

DMEPOS fees for E0424 by modifier
ModifierFloor / ceilingNon-rural state rangeRural rangeAK / HI / PR / VI
RR (rental)—$94.56 (CA, NV, OR…) to $101.12 (CO, ID, MT…)$177.16 (49 states)AK $177.16, HI $177.16, PR $177.16, VI $177.16
RR (rental), QB (oxygen above 4 lpm with portable, rest/night average)—$94.56 (CA, NV, OR…) to $101.12 (CO, ID, MT…)$177.16 (49 states)AK $177.16, HI $177.16, PR $177.16, VI $177.16
RR (rental), QF (oxygen above 4 lpm at rest with portable)—$94.56 (CA, NV, OR…) to $101.12 (CO, ID, MT…)$177.16 (49 states)AK $177.16, HI $177.16, PR $177.16, VI $177.16

Hospital outpatient (OPPS Addendum B)

Status indicator Y (Non-implantable DME), with no separate OPPS payment rate.

Medically Unlikely Edits for E0424

MUE limits for E0424: practitioner 0 (MAI 3, CMS Policy); hospital outpatient 0 (MAI 3, CMS Policy); DME supplier 1 (MAI 2, Code Descriptor / CPT Instruction). The DME supplier MUE is a date-of-service policy edit: units above the limit deny even when split across lines, and appeals rarely succeed.

MUE values for E0424 by setting
SettingMUE (units/DOS)MAICMS rationale
Practitioner services03 Date of Service Edit: ClinicalCMS Policy
Facility outpatient hospital03 Date of Service Edit: ClinicalCMS Policy
DME supplier12 Date of Service Edit: PolicyCode Descriptor / CPT Instruction

The MUE lookup for E0424 shows every setting next to any other code on the same claim.

NCCI edits and add-on rules

No active practitioner PTP pair lists E0424 in v323r0.

E0424 is neither an add-on code nor a designated primary code in the 2026 Q4 NCCI add-on edit file.

Pair counts show exposure, not the answer for one claim. Check E0424 against a second code to see whether the pair bundles and whether a modifier can separate the services.

Medicare coverage policies for E0424

1 active Local Coverage Determination and 0 billing and coding articles list E0424. Each applies only in its contractor's jurisdiction, and the article carries the diagnosis codes that support the item or service.

Denials to expect on E0424

CARC 50 · N115

the diagnosis or documentation does not meet the LCD or billing article that lists E0424

CARC 151 · N362

units of E0424 exceed the DME supplier MUE of 1 per date of service

CARC 4

the RR, QB, QF payment modifier is missing or does not match the item

CARC 16

the claim lacks information needed to adjudicate the line, such as an order, NPI or required modifier

Where QuickIntell fits for E0424 claims

QuickAuth coordinates the requirement checks and documentation that DME claims for E0424 depend on, with human review of each case, and QuickRCM carries claim readiness and the CARC 50, 151 and modifier denials these items draw.

See QuickAuth for requirement checksSee QuickRCM for denial follow-upBook a meeting

Frequently asked questions: HCPCS E0424

What does HCPCS code E0424 describe?

"Stationary compressed gaseous oxygen system, rental; includes container, contents, regulator, flowmeter, humidifier, nebulizer, cannula or mask, and tubing" (short descriptor "Stationary compressed gas 02"), in the E section (durable medical equipment). Added 1993-01-01; last action N (no maintenance) effective 2001-01-01.

Is E0424 a CPT code?

No: CMS maintains E0424 in HCPCS Level II, while the AMA maintains CPT. People do search "E0424 CPT code", and it goes in the same procedure-code field.

What does Medicare pay for E0424?

E0424 is paid from the DMEPOS fee schedule as oxygen and oxygen equipment (OX): RR (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16; RR-QB (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16; RR-QF (rental) $94.56 in CA, NV, OR and 1 more to $101.12 in CO, ID, MT and 2 more, rural $177.16, October 2026.

How many units of E0424 can be billed per day?

MUE limits for E0424: practitioner 0 (MAI 3, CMS Policy); hospital outpatient 0 (MAI 3, CMS Policy); DME supplier 1 (MAI 2, Code Descriptor / CPT Instruction). For the DME supplier MUE (MAI 2), units above 1 deny for the whole day as a policy limit; denials arrive as CARC 151.

Does Medicare cover E0424?

Coverage code D (special coverage instructions apply). 1 active LCD lists E0424: L33797 (Oxygen and Oxygen Equipment).

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Disclaimer

This page is an operational reference compiled from CMS publications: the HCPCS Level II file, the physician, DMEPOS and clinical laboratory fee schedules, OPPS and ASC addenda, NCCI MUE, PTP and add-on edit tables and the Medicare Coverage Database. Amounts are Medicare national figures before locality and state adjustment; Medicaid and commercial payers set their own. CPT codes are shown as numbers only; CPT descriptors are copyright AMA. Nothing here is legal, clinical or billing advice.

Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.