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Modifiers Added or Revised for Select Oxygen System Codes

May 16, 2018

Effective for dates of service on or after April 1, 2018, modifiers for select oxygen system HCPCS codes have been added or revised as part of the HCPCS quarterly updates.

As presented in the following table, new modifiers QA, QB and QR have been added as approved modifiers, and the long descriptors for current modifiers QE, QF and QG have been revised:

Modifier Description
QA Prescribed amounts of stationary oxygen for daytime use while at rest and nighttime use differ and the average of the two amounts is less than one liter per minute (LPM)
QB Prescribed amounts of stationary oxygen for daytime use while at rest and nighttime use differ and the average of the two amounts exceeds four LPM and portable oxygen is prescribed
QE Prescribed amount of stationary oxygen while at rest is less than one LPM. The reimbursement amount is reduced by 50 percent
QF Prescribed amount of stationary oxygen while at rest exceeds four LPM and portable oxygen is prescribed
QG Prescribed amount of stationary oxygen while at rest is greater than four LPM
QR Prescribed amounts of stationary oxygen for daytime use while at rest and nighttime use differ and the average of the two amounts exceeds four LPM

These modifiers are billable only with the following HCPCS codes:

HCPCS Code Description
E0424 Stationary compressed gaseous oxygen system, rental; includes container, contents, regulator; flowmeter, humidifier, nebulizer, cannula or mask, and tubing
E0439 Stationary liquid oxygen system, rental; includes container, contents, regulator, flowmeter, humidifier, nebulizer, cannula or mask, & tubing
E1390 Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate
E1391 Oxygen concentrator, dual delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate, each

No action is required of providers. Affected claims will be reprocessed via an Erroneous Payment Correction (EPC).