"CPT copyright 2014 American Medical Association. All rights reserved. CPT is a registered trademark of the American Medical Association."

Modifier AU, AV and AW


These modifiers are added to the HCPCS codes to identify supplies and equipment that may be covered under more than one DMEPOS benefit category:

AU Item furnished in conjunction with a urological, ostomy, or tracheostomy supply

AV Item furnished in conjunction with a prosthetic device, prosthetic or orthotic

AW Item furnished in conjunction with a surgical dressing

AU modifier is applicable only for the HCPCS codes listed below

A4217    Sterile water/saline, 500 ml

A4450    Tape, nonwaterproof, per 18 sq in

A4452    Tape, waterproof, per 18 sq in

A5120    Skin barrier, wipes or swabs, each

AV modifier is applicable only for the HCPCS codes listed below

A4450    Tape, nonwaterproof, per 18 sq in

A4452    Tape, waterproof, per 18 sq in

A5120    Skin barrier, wipes or swabs, each

AW modifier is applicable only for the HCPCS codes listed below

A4450    Tape, nonwaterproof, per 18 sq in

A4452    Tape, waterproof, per 18 sq in

A6531    Gradient compression stocking, below knee, 30-40 mm Hg, each

A6532    Gradient compression stocking, below knee, 40-50 mm Hg, each

A6545    Gradient compression wrap, nonelastic, below knee, 30-50 mm Hg, each

Codes A4450 and A4452 are the only codes that have been identified at this time that would require use of all three of the above listed modifiers. Providers must report these modifiers on claims for items identified by codes A4450 and A4452 that are furnished on or after January 1, 2005.

Providers must report modifier AU on claims for items identified by code A4217 that are furnished in conjunction with a urological, ostomy, or tracheostomy supply on or after January 1, 2005.

Providers must report modifier AW on claims for items identified by codes A6531 and A6532

Providers must report either modifier AU or modifier AV on claims for items identified by code A5120

Return to List of All Modifiers

Popular Posts