Modifiers KM, KN (2021)
KM Modifier and KN Modifier are to be used on claims for replacement of items identified by codes L8040 thru L8047 that are furnished on or after January 1, 2005. Payment for codes L8040 thru L8047 is based on the presence of modifiers KM or KN. These modifiers are only used when a prostheses is being replaced.
KM Modifier Replacement of facial prosthesis – including new impression/moulage
KN Modifier Replacement of facial prosthesis – Using previous master model
KM Modifier and KN Modifier are applicable only for the below listed HCPCS codes
L8040 Nasal prosthesis, provided by a nonphysician
L8041 Midfacial prosthesis, provided by a nonphysician
L8042 Orbital prosthesis, provided by a nonphysician
L8043 Upper facial prosthesis, provided by a nonphysician
L8044 Hemi-facial prosthesis, provided by a nonphysician
L8045 Auricular prosthesis, provided by a nonphysician
L8046 Partial facial prosthesis, provided by a nonphysician
L8047 Nasal septal prosthesis, provided by a nonphysician
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